Sitters A-Z

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Denis O'Conor (1794-1847), Politician: MP for County Roscommon. 1 Portrait

Major Purcell O'Gorman (1818-1888), Soldier, Irish Nationalist and politician; MP for Waterford City. 1 Portrait

Georgia O'Keeffe (1887-1986), Artist. 1 Portrait

Montagu Frederick O'Reilly (1822-1888), Rear-Admiral. 2 Portraits

Della Oake, Fashion model. 1 Portrait

Sir Charles Oakeley, 1st Bt (1751-1826), Administrator in India. 1 Portrait

Sir Charles John Oakeley, 5th Bt (1862-1938), Justice of the Peace. 7 Portraits

Sir Charles Richard Andrew Oakeley, 6th Bt (1900-1959), Insurance broker. 10 Portraits

Lady Helena Oakeley (née Beatson) (1762-1839), Artist; wife of Sir Charles Oakeley, Bt. 4 Portraits

Sir Herbert Stanley Oakeley (1830-1903), Composer. 3 Portraits

Richard Banner Oakeley (born 1835?), Architectural writer and photographer. 2 Portraits

Sir Cecil Oakes (1884-1959), Alderman. 3 Portraits

Greta (née Hartmann), Lady Oakes (died 1977), Honour Danish Consul Bahamas; wife of Sir Sydney Oakes, 2nd Bt; daughter of Gunnar Victor Hartmann. 2 Portraits

Sir Hildebrand Oakes (1754-1822), Lieutenant-General. 5 Portraits

Philip Barlow Oakes (1928-2005), Scriptwriter, broadcaster, film critic and poet. 1 Portrait

Richard Oakes (active 19th century), Provost of King's College, Cambridge. 1 Portrait

Mrs Oakes. 1 Portrait

Sir Walter Fraser Oakeshott (1903-1987), Vice-Chancellor of Oxford University. 1 Portrait

Philip Oakey (1955-), Musician; co-founder, composer and lead singer for The Human League. 1 Portrait

Alfred James Oakley (1880-1959), Sculptor. 4 Portraits

Harry Lawrence Oakley (1882-1960). 0 Portraits

Henry John Percy Oakley (1878-1942), Actuary. 1 Portrait

Sir John Hubert Oakley (1867-1946), Surveyor. 1 Portrait

Kenneth Page Oakley (1911-1981), Anthropologist, palaeontologist and museum curator. 1 Portrait

Octavius Oakley (1800-1867), Watercolourist. 2 Portraits

Sylvia Oakley, Actress. 7 Portraits

Thomas Oakley (1879-1936), Conservative politician; MP for the Wrekin. 3 Portraits

William Edward Oakley (1828-1912), Quarry owner; hunt master. 1 Portrait

Hendrie Dudley Oakshott, Baron Oakshott of Bebington (1904-1975), Politician; Treasurer of the Household. 5 Portraits

Richard Oastler (1789-1861), Reformer. 3 Portraits

Lawrence Edward Grace Oates (1880-1912), Antarctic explorer. 4 Portraits

Mark Oates (active 1799), Captain in the Royal Marines. 1 Portrait

Simon Oates (1932-2009), Actor. 1 Portrait

Titus Oates (1649-1705), Informer. 23 Portraits

Verity Oates, Suffragette. 2 Portraits

Alastair Oatey, Personnel Assistant, National Portrait Gallery. 1 Portrait

Charles William Oatley (1904-1996), Professor of Electrical Engineering. 1 Portrait

Third Mate Oba, Third Officer of the Japanese ship Taisei Maru. 1 Portrait

Charles Obach (1841-1921), Art dealer; Founder of Obach & Co. 1 Portrait

Robert Obbard (active 1844), Member of a deputation to Louis Philippe, 1844. 1 Portrait

Thomas Lewis O'Beirne (1748-1823), Bishop of Meath. 1 Portrait

Merle Oberon (Estelle Merle O'Brien Thompson) (1917-1979), Film actress. 31 Portraits

Yolanda, Viscountess Obert de Thieusies, Daughter of Baron Romano-Auezzana; wife of Vicomte Obert de Thieusies. 6 Portraits

Fiona Jane Obert de Thieusies (née O'Brien) (1941-), Wife of Romano Louis Marie Joseph Ghislain Obert de Thieusies; daughter of Hon. Fionn Myles Maryons O'Brien. 3 Portraits

Sergey Vladimirovich Obraztsov (1901-1992), Puppet master. 3 Portraits

Graeme Obree (1965-), Cyclist. 2 Portraits

Patrick O'Brian (Richard Patrick Russ) (1914-2000), Novelist. 1 Portrait

Leslie Kenneth O’Brien, Baron O’Brien of Lothbury (1908-1995), Governor of the Bank of England. 1 Portrait

Alice O'Brien, Actress. 6 Portraits

Arthur John Rushton O'Brien (1883-1940), Chief Medical Adviser to Secretary of State for Colonies. 1 Portrait

Brian O'Brien (died 1973), Solicitor. 1 Portrait

James ('Bronterre') O'Brien (1805-1864), Chartist. 1 Portrait

Dermod O'Brien (1865-1945), Artist. 1 Portrait

Edmund Donough John O'Brien (1858-1945), Brigadier-General. 1 Portrait

Edna O'Brien (1930-), Novelist, short story writer and playwright. 9 Portraits

Edward John O'Brien (1968-), Musician; guitarist for Radiohead. 1 Portrait

Edward Joseph Harrington O'Brien (1890-1941), Editor and anthologist. 2 Portraits

Hon. Eileen Vivien O'Brien (née de la Poer Beresford) (1912-1975), Wife of Robert Alfred O'Brien; daughter of 5th Baron Decies. 9 Portraits

Eliza Bridgeman O'Brien (née Willyams) (died 1802), First wife of James O'Brien, later 3rd Marquess of Thomond. 1 Portrait

Fiona Jane O'Brien (1941-), Wife of Romano de Thieusies. 1 Portrait

Hon. Fionn Myles Maryons O'Brien (1903-1977), Soldier; son of 15th Baron Inchiquin. 1 Portrait

Irene Clarice O'Brien (née Richards, formerly Marchioness of Queensberry and Lady Dunn) (1898-1977), Music hall entertainer; former wife of 11th Marquess of Queensberry and of Sir James Dunn, 1st Bt, and later wife of Murrough O'Brien; daughter of Henry William Richards. 4 Portraits

Jack O'Brien. 1 Portrait

James Francis Xavier O'Brien (1828-1905), Irish nationalist. 2 Portraits

Josephine Reine O'Brien (née Bembaron) (1913-2011), Wife of Hon. Fionn Myles Maryons O'Brien; daughter of Joseph Eugene Bembaron. 2 Portraits

Kate O'Brien (1897-1974), Novelist. 16 Portraits

Kendal Edmund O'Brien (1849-1909), Politician and farmer. 1 Portrait

Michael O'Brien (1937-1968), Accountant; son of Robert Alfred O'Brien. 3 Portraits

Michael O'Brien (1954-), Politician; Minister of State for Health Services. 5 Portraits

Nelly O'Brien (died 1768), Courtesan, beauty and model for Reynolds. 11 Portraits

Patrick O'Brien (1853-1917), Mechanical and marine engineer and politician. 4 Portraits

Patrick Joseph O'Brien (1835-1911), Politician, hotel proprietor, property and land owner. 4 Portraits

Richard O'Brien (1942-), Creator of 'The Rocky Horror Picture Show', actor and television presenter. 1 Portrait

Sean O'Brien (1952-), Poet. 1 Portrait

Lady Susanna Sarah Louisa O'Brien (née Fox-Strangways) (1743-1827), Actor; wife of William O'Brien. 1 Portrait

Sir Tom O'Brien (1900-1970), Politician; MP for Nottingham and trade unionist. 10 Portraits

William O'Brien (1738?-1815), Actor. 4 Portraits

William O'Brien (1852-1928), Irish nationalist leader and journalist. 5 Portraits

Sir William Donough O'Brien (1916-), Admiral. 6 Portraits

William Smith O'Brien (1803-1864), Irish nationalist. 1 Portrait

Hermann Obrist (1862-1927), Sculptor. 1 Portrait

Edward O'Bryen (before 1754-1808), Naval officer. 3 Portraits

Cornelius O'Callaghan (died circa 1740), Lawyer and Conservative politician; MP for Fethard. 1 Portrait

Sir Desmond Dykes Tynte O'Callaghan (1843-1931), Major-General. 7 Portraits

Edmund Bailey O'Callaghan (1800-1880), Journalist and historian. 1 Portrait

Richard O'Callaghan (1940-), Actor. 1 Portrait

Hon. William Frederick Ormonde O'Callaghan (1852-1877), Politician; son of 2nd Viscount Lismore. 1 Portrait

Sean O'Casey (1880-1964), Playwright and writer. 5 Portraits

Giuseppe Paolo Stanislao Occhialini (1907-1993), Italian physicist. 1 Portrait

Samson Occom (1723?-1792), Missionary to North American Indians. 1 Portrait

Humphrey Ocean (Humphrey Anthony Erdeswick Butler-Bowdon) (1951-), Painter. 2 Portraits

Mrs T. Ochiai. 1 Portrait

Sir David Ochterlony, 1st Bt (1758-1825), General. 2 Portraits

William Ockham (circa 1287-1347), Philosopher, theologian, and political theorist. 1 Portrait

Ron Ockindon, Photographer. 1 Portrait

Michael James Palmer O'Cock (1919-), Brigadier. 1 Portrait

Daniel O'Connell (1775-1847), Irish politician; MP for Dublin City and Cork County. 207 Portraits

J.C. O'Connell. 1 Portrait

Louisa Catherine Clare O'Connell (née Leighton) (died 1928), Wife of Maurice Charles O'Connell. 1 Portrait

Morgan O'Connell (1804-1885), Soldier and politician. 1 Portrait

Arthur O'Connor (1763-1852), Irish rebel. 7 Portraits

Arthur O'Connor (1844-1923), Politician and judge. 4 Portraits

Sir Denis Stuart Scott O'Connor (1907-1988), Lieutenant-General. 2 Portraits

Des O'Connor (1932-), Entertainer. 1 Portrait

Erin O'Connor (1978-), Fashion model. 2 Portraits

Feargus Edward O'Connor (1796?-1855), Chartist leader. 5 Portraits

Frank O'Connor (Michael Francis Xavier O'Donovan) (1903-1966), Writer. 2 Portraits

Sir (William) Frederick Travers O'Connor (1870-1943), Lieutenant-Colonel. 1 Portrait

Jack O'Connor (1897-1977), Cricketer. 2 Portraits

James O'Connor (1836-1910), Journalist and politician. 2 Portraits

John O'Connor (1850-1928), Irish Politician; MP for several constituencies. 14 Portraits

Sir Richard Nugent ('Dick') O'Connor (1889-1981), General. 5 Portraits

Roger O'Connor (1762-1834), Irish nationalist. 3 Portraits

Sinead O'Connor (1966-), Singer, songwriter and actress. 2 Portraits

Sir Terence James O’Connor (1891-1940), Politician; Solicitor General for England and Wales. 1 Portrait

Thomas Power O'Connor (1848-1929), Journalist and politician; MP for Galway Borough and Liverpool. 21 Portraits

Charles Owen O'Conor (1838-1906), 'The O'Conor Don'; Landlord in Ireland and politician. 2 Portraits

Owen Phelim O'Conor Don (1870-1943), 'The O'Conor Don'. 2 Portraits

Prince Octavius (1779-1783), Son of George III. 3 Portraits

Prudence Anne ('Prue') O'Day (1946-), Contemporary art dealer. 1 Portrait

E.M. Oddie (née Elinor Mary O'Donoghue), Novelist. 1 Portrait

Henry Hoyle Oddie (1744-1830), Solicitor. 1 Portrait

William Edgar ('Bill') Oddie (1941-), Writer, actor and broadcaster. 1 Portrait

Noel Oddy (1928-1989), Businessman. 1 Portrait

Chris O'Dell (1941-). 1 Portrait

Dick O'Dell, Record producer. 1 Portrait

Edwin John ('E.J.') Odell (1835-1928), Actor and comedian. 1 Portrait

Ernest Walter Odell (died 1976), Vicar. 1 Portrait

Francesca Odell, Archive and Library Assistant, National Portrait Gallery. 1 Portrait

Maude Odell (O'Dell) (1870-1937), Actress. 1 Portrait

Noel Ewart Odell (1890-1987), Geologist and mountaineer. 4 Portraits

William Henry Odenheimer (1817-1879), Bishop of New Jersey. 2 Portraits

Michel Odent (1930-), Obstetrician and writer. 1 Portrait

Dora (née Labonchere), Princess Odescalchi, Wife of Prince Gialma Odescalchi; daughter of Henry Labonchere. 5 Portraits

George William Odey (1900-1985), Politician and businessman. 10 Portraits

George Odger (1813-1877), Shoemaker and trade unionist. 2 Portraits

Joyce Odiase (née Taylor), Student, Royal Academy of Music; Model. 2 Portraits

William Odling (1909-1997), Major-General. 1 Portrait

Doris Maude Odlum (1890-1985), Psychiatrist. 1 Portrait

Philip O'Doherty (1871-1926), Politician and solicitor. 1 Portrait

Cristina Odone (1960-), Deputy editor of the New Statesman. 1 Portrait

Elliott O'Donnell (1872-1965), Writer and lecturer. 9 Portraits

Eric Hugh O'Donnell (1893-1950), Major-General. 8 Portraits

Frank Hugh O'Cahan O'Donnell (1846-1916), Irish writer and politician; MP for Galway and Dungarvan. 2 Portraits

Peter O'Donnell (1920-2010), Writer. 1 Portrait

Sir Samuel Perry O’Donnell (1874-1946), Civil servant. 1 Portrait

Bernard O'Donoghue (1945-), Poet. 1 Portrait

Daniel O'Donoghue (1833-1889), 'The O'Donoghue of the Glens'; Irish politician. 2 Portraits

Freeman M. O'Donoghue, Author. 1 Portrait

William James O'Donovan (1886-1955), Dermatologist and politician; MP for Mile End. 6 Portraits

Chris O'Dowd (1979-), Actor and comedian. 1 Portrait

Sir James O'Dowd (1829-1903), Lawyer. 1 Portrait

M.J. O'Dowd. 1 Portrait

Darby O'Driscol. 1 Portrait

Florence O'Driscoll (1858-1939), Engineer and journalist. 1 Portrait

Eimar Ultan O'Duffy (1893-1935), Irish playwright, novelist and satirist. 1 Portrait

Solomon Odunaiya Odutola (active 1950s-1960s), Bishop of Ondo-Benin, Nigeria and Bishop of Ibadan, Nigeria. 1 Portrait

Sir Michael Francis O'Dwyer (1864-1940), Indian administrator. 2 Portraits

Sean Gillespie O'Dwyer (1941-), Lieutenant-Colonel; Private Secretary and Equerry to the Duke of York and Prince Edward, Earl of Wessex. 2 Portraits

Johannes Oecolampadius (1482-1531), German religious reformer. 2 Portraits

Sean O'Faolain (1900-1991), Novelist and biographer. 6 Portraits

Bernadette O'Farrell (1924-1999), Actress. 1 Portrait

Mary O'Farrell (active 1910s), Actress. 1 Portrait

Frederico J. O'Farril, Mexican Ambassador to London. 6 Portraits

Richard More O'Ferrall (1797-1880), Governor of Malta. 1 Portrait

Ronald Stanhope More O'Ferrall (1890-1973), Bishop of Madagascar and Assistant Bishop of Gloucester. 2 Portraits

Offa, King of Mercia (died 796), Reigned 757-796. 2 Portraits

Jacques Offenbach (1819-1880), French composer and cellist. 1 Portrait

Martin Offiah (1966-), Rugby League player. 1 Portrait

Sir Frank Keith Officer (1889-1969), Diplomat; Australian ambassador to China and France. 6 Portraits

Officers, Officers bearing bannerols at the funeral of the 1st Duke of Wellington. 1 Portrait

Francis Revel Offord (1896-1969), Captain. 1 Portrait

Chris Ofili (1968-), Artist. 5 Portraits

Liam O'Flaherty (1896-1984), Novelist. 7 Portraits

Mary O'Flaherty, Fashion model. 1 Portrait

(Shirley) Georgina Ogden (née Maclay) (1933-), Wife of Robert David Ogden; granddaughter of 1st Baron Maclay. 1 Portrait

Samuel Ogden (1716-1778), Divine. 2 Portraits

John Andrew Howard Ogdon (1937-1989), Pianist and composer. 6 Portraits

Sir William Gammie Ogg (1891-1979), Agricultural scientist. 8 Portraits

John Ogilby (1600-1676), Publisher and geographer. 8 Portraits

Robert James Leslie Ogilby (1880-1964), Colonel. 1 Portrait

Hon. Albert George Ogilvie (1891-1939), Premier of Tasmania. 2 Portraits

Sir Andrew Muter John Ogilvie (1858-1924), Director of Army Signals. 3 Portraits

Dame Bridget Margaret Ogilvie (1938-), Biologist. 1 Portrait

Sir Frederick Wolff Ogilvie (1893-1949), Economist and vice-chancellor. 3 Portraits

Sir (William) Heneage Ogilvie (1887-1971), Surgeon and Major-General. 4 Portraits

John Ogilvie (1578 or 1579-1615), Jesuit and saint. 1 Portrait

John Ogilvie (1732-1813), Divine, poet and writer. 1 Portrait

Mary Helen, Lady Ogilvie (1900-1990), Principal of St Anne's College, Oxford. 8 Portraits

Sir George Arthur D. Ogilvie-Forbes (1891-1954), Army captain and foreign diplomat. 5 Portraits

Derek Herbert Ogilvie-Grant-Studley-Herbert (died 1960), Husband of Nina Caroline Ogilvy-Grant, Countess of Seafield. 8 Portraits

Lady Henrietta Louisa Ogilvy (née Fermor) (1829-1888), Wife of Thomas Ogilvy; daughter of 4th Earl of Pomfret. 1 Portrait

Sir Angus James Bruce Ogilvy (1928-2004), Council and trustee of the Prince's Trust. 20 Portraits

David Ogilvy (died 1801), Lieutenant-Colonel; killed at the Battle of Alexandria. 2 Portraits

Sir David John Wilfrid Ogilvy, 13th Bt (1914-1992), Landowner and farmer. 10 Portraits

Ian Ogilvy (1943-), Actor and writer. 1 Portrait

James Robert Bruce Ogilvy (1964-), Son of Princess Alexandra, Lady Ogilvy and Sir Angus Ogilvy. 5 Portraits

Sir John Ogilvy, 9th Bt (1803-1890), Liberal politician; MP for Dundee. 2 Portraits

Julia Caroline Ogilvy (née Rawlinson) (1964-), Wife of James Robert Bruce Ogilvy; daughter of Charles Frederick Melville Rawlinson. 1 Portrait

Skene Ogilvy (active late 18th-early 19th century), Minister. 2 Portraits

Thomas Wedderburn Ogilvy (1814-1899), Army officer and landowner. 1 Portrait

Miss Ogilvy (active mid 19th century). 2 Portraits

Sir John Oglander (1585-1655), Diarist. 2 Portraits

Catherine Hannah Ogle (active late 18th-mid 19th century), Wife of John Saville Ogle. 1 Portrait

Sir Chaloner Ogle (1681?-1750), Admiral of the Fleet. 2 Portraits

Chaloner Blake Ogle (circa 1765-1857). 1 Portrait

Sir John Ogle (1569-1640), Army officer. 3 Portraits

John Ogle (circa 1652 or 1653-circa 1692), Wit and gambler. 1 Portrait

John William Ogle (1824-1905), Physician. 1 Portrait

Thomas Ogle (active 1801), Swindler. 1 Portrait

William Reynolds Ogle (circa 1816-1886), Vicar of Bishops Teignton, Devon and of Luton, Devon. 1 Portrait

Captain Ogle, Naval officer. 1 Portrait

James Edward Oglethorpe (1696-1785), Founder of Georgia. 4 Portraits

David Rees Rees-Williams, 1st Baron Ogmore of Bridgend (1903-1976), Solicitor, politician and civil servant. 28 Portraits

Mrs O'Gorman. 1 Portrait

Gerald Vigors de Courcy O'Grady, The O'Grady (1912-1993), Lieutenant-Colonel. 4 Portraits

Sir James O'Grady (1866-1934), Trade unionist and politician. 1 Portrait

Paul O'Grady (1955-), Comedian. 4 Portraits

Hon. Thomas O'Grady (died 1882), Army officer; son of 1st Viscount Guillamore; husband of Maria de la Soledad Isabel Sofia Ball. 1 Portrait

Alexander George Ogston (1911-1996), Biochemist. 1 Portrait

Thomas O'Hagan, 1st Baron O'Hagan (1812-1885), Judge and politician. 3 Portraits

Maurice Herbert Towneley-O'Hagan, 3rd Baron O'Hagan (1882-1961), Lord-in-Waiting to King Edward VII 1907-10. 3 Portraits

Armen Ohanian (née Sophia Pirboudaghian) (1887-1976), Armenian dancer. 1 Portrait

Brian O'Hara (1942-), Musician; guitarist for The Four Jays. 2 Portraits

Charles O'Hara (circa 1740-1802), Army officer and colonial governor. 1 Portrait

Damian O'Hara, Retail Assistant, National Portrait Gallery. 1 Portrait

Henry Stewart O'Hara (1843-1923), Bishop of Cashel and Emly, Waterford and Lismore. 1 Portrait

Kane O'Hara, Irish playwright. 2 Portraits

Maureen O'Hara (1920-), Actress and singer. 1 Portrait

Pat O'Hara Wood, Tennis player. 3 Portraits

Martha Armstrong O'Hare (1895-1985), Wife of Joseph James O'Hare. 1 Portrait

Don Bernardo O'Higgins, Revolutionary. 1 Portrait

Sir Eric James Ohlson, 2nd Bt (1911-1983), Businessman. 1 Portrait

Georges Ohnet (1848-1918), French author. 2 Portraits

Yoshiro Ohta (1900-1993), Japanese tennis player. 3 Portraits

Christine Ohuruogu (1984-), Sprinter. 1 Portrait

David Fyodorovich Oistrakh (1908-1974), Violinist. 2 Portraits

Gertrude Alexander Okeden (née Williams), Wife of Ronald O. Alexander. 1 Portrait

John O'Keeffe (1747-1833), Dramatist. 2 Portraits

Sir Menus William O'Keeffe (1859-1944), Surgeon General. 2 Portraits

Stephen Martin Lanigan O'Keeffe (1878-1948), High Commissioner in London for South Rhodesia 1935-46. 6 Portraits

Dennis O'Kelly (circa 1728-1787), Racehorse owner. 1 Portrait

Seán Thomas O'Kelly (1882-1966), President of Éire (Ireland). 1 Portrait

Fola Okesola (1974-), Heavyweight boxer. 2 Portraits

John Okey (1606-1662), Parliamentary commander and regicide. 7 Portraits

Sophie Okonedo (1968-), Actress. 1 Portrait

Lawrence Okoye (1991-), Discus thrower. 1 Portrait

Michael Okpara (1920-1984), Premier of Eastern Nigeria. 3 Portraits

Ben Okri (1959-), Novelist, poet and short story writer. 1 Portrait

Bey Ali Fethi Okyar (1880-1943), Prime Minister of Turkey. 1 Portrait

Princess Ola Hassan. 5 Portraits

Festo Habakkuk Olang’ (1914-2004), Assistant Bishop of Mombasa and first African Archbishop of Kenya. 1 Portrait

Sir Olateru (1910-1999), Nigerian Chief. 2 Portraits

Olaus, King of Sweden (died 950), King of Sweden. 1 Portrait

Olav V, King of Norway (1903-1991), Reigned 1957-91. 20 Portraits

Alan Oldaker (died 1987), Colonial administrator; son of F.A. Oldaker. 1 Portrait

Myrtle Oldaker (née Yatman) (died 1996), Wife of Alan Oldaker; daughter of Edward Yatman. 2 Portraits

Old-Betz, Sioux Indian. 1 Portrait

Edward Oldcorne (1561-1606), Jesuit. 4 Portraits

Claes Thure Oldenburg (1929-), Sculptor. 1 Portrait

John Oldershaw (1754-1847), Archdeacon of Norfolk. 4 Portraits

Lady (Mary) Elizabeth Oldfield (née Murray) (1913-), Wife of Peter Carlton Oldfield; daughter of 8th Earl of Dunmore. 8 Portraits

Anne Oldfield (1683-1730), Actress. 5 Portraits

Bruce Oldfield (1950-), Fashion designer. 3 Portraits

Claude Houghton Oldfield (1889-1961), Novelist. 2 Portraits

Josiah Oldfield (1863-1953), Lawyer, physician, and writer on health. 1 Portrait

J.G. Oldfield, Mayor of Whitehaven. 1 Portrait

Michael ('Mike') Oldfield (1953-), Musician and composer. 2 Portraits

Nina Oldfield, Actress. 4 Portraits

Sally Oldfield (1947-), Singer; songwriter; sister of Michael ('Mike') Oldfield. 1 Portrait

William John Oldfield (1857-1934), Canon of Lincoln Cathedral and author. 3 Portraits

Alun Bennett Oldfield-Davies (1905-1988), Controller, Welsh BBC. 2 Portraits

George Oldham, Vicar, St Paul's, Walden. 1 Portrait

George Ashton Oldham (1877-1963), Bishop of Albany. 1 Portrait

Henry Oldham (1815-1902), Obstetric physician. 2 Portraits

Hugh Oldham (circa 1450-1519), Bishop of Exeter. 1 Portrait

John Oldham (1653-1683), Poet. 1 Portrait

Nathaniel Oldham (active 1728-circa 1747), Virtuoso; collector of curiosities. 1 Portrait

Richard Dixon Oldham (1858-1936), Geologist and seismologist. 2 Portraits

Sam Oldham (1993-), Member of GB Men's Gymnastics Team, London 2012. 1 Portrait

Angelica (née Pergami), Contessa Oldi (active 1815-1821), Lady of the bedchamber to Queen Caroline. 4 Portraits

Samuel Oldknow (1756-1828), High Sheriff of Derby. 1 Portrait

William Oldys (1696-1761), Norroy king-of-arms and antiquary. 1 Portrait

Arthur O'Leary (1729-1802), Roman Catholic priest and religious controversialist. 1 Portrait

Tom Evelyn O'Leary (1862-1924), Brigadier-General. 5 Portraits

Olga Feodorovna, Grand Duchess of Russia (1839-1891), Wife of Michael Nikolaevich, Grand Duke of Russia; daughter of Leopold, Grand Duke of Baden. 1 Portrait

Olga, Queen of Greece (1851-1926), Consort of George I, King of Greece; daughter of Constantine, Grand Duke of Russia. 4 Portraits

Olga Alexandrovna, Grand Duchess of Russia (1882-1960), Former wife of Peter Alexandrovich, Duke of Oldenburg, and later wife of Nikolai Alexandrovich Kulikovsky; daughter of Alexander III, Emperor of Russia. 1 Portrait

Princess Olga of Hanover and Cumberland (1884-1958), Daughter of Ernest Augustus, Crown Prince of Hanover and 3rd Duke of Cumberland and Teviotdale. 1 Portrait

Olga, Grand Duchess of Russia (1895-1918), Daughter of Nicholas II, Emperor of Russia. 12 Portraits

Olga Romanoff, Princess Romanova (1950-), Daughter of Andrei Aleksandrovich Romanov, Prince of Russia. 1 Portrait

Olga Nikolaevna, Grand Duchess of Russia (later Queen consort of Württemberg) (1822-1892), Queen consort of Charles I, King of Württemberg; daughter of Nicholas I, Emperor of Russia. 1 Portrait

Wallace ('Wally') Olins (1930-2014), Corporate identity and global brand consultant. 1 Portrait

Sir Lancelot Oliphant (1881-1965), Diplomat. 8 Portraits

Laurence Oliphant (1829-1888), Diplomatist and traveller. 1 Portrait

Sir Laurence James Oliphant, 9th of Condie (1846-1914), Soldier. 1 Portrait

Sir Marcus Laurence Elwin ('Mark') Oliphant (1901-2000), Physicist involved in developing the atomic bomb. 7 Portraits

Margaret Oliphant Wilson Oliphant (1828-1897), Novelist and biographer. 3 Portraits

Fernandez Olissiponen (died 1570), Jesuit Missionary. 1 Portrait

Edyth Olive (Mrs Arthur Applin) (1872-1956), Actress. 3 Portraits

Anne Oliver (1593-1672), Wife of Peter Oliver. 1 Portrait

Anne Madeline Bessie Ghislaine Oliver (née Batho) (1938-), Wife of Stephen Robert Morgan Oliver; daughter of Sir Maurice Benjamin Batho, 2nd Bt. 3 Portraits

Anthony Oliver (1923-1995), Actor. 1 Portrait

Dame Beryl Oliver (1882-1972), Charity worker and administrator, Head ofthe Naval and Military Volunteer Aid Detachment. 6 Portraits

Charles Pye Oliver (1861-1951), Physician to the King. 2 Portraits

Eileen Oliver (née Cowlrick). 1 Portrait

Emma Sophia Oliver (née Eburne) (1819-1885), Landscape painter; wife of William Oliver. 1 Portrait

Sir (Frederick) Ernest Oliver (1900-1994), Chairman of George Oliver (Footwear) Ltd. 2 Portraits

Ethel Oliver (active circa 1903-1933), Actress. 12 Portraits

Sir Geoffrey Nigel Oliver (1898-1980), Admiral. 2 Portraits

George Oliver (1782-1867), Freemason, topographer, writer and rector. 1 Portrait

Sir Henry Francis Oliver (1865-1965), Admiral of the Fleet. 5 Portraits

Isaac Oliver (circa 1565-1617), Miniature painter. 5 Portraits

Jane Oliver (Helen Christina Easson Rees) (1904-1970), Writer. 27 Portraits

Sir John William Lambton Oliver (1873-1952), Deputy Director-General of Equipment and Stores, Admiralty. 3 Portraits

Meriel Edith Milicent Oliver (née Moore) (1936-), Daughter of Sir Alan (Hilary) Moore, 2nd Bt; wife of John Oliver. 3 Portraits

Martha Cranmer ('Pattie') Oliver (1834-1880), Actress. 5 Portraits

Peter Oliver (circa 1589-1647), Miniature painter; eldest son of Isaac Oliver. 4 Portraits

Robert Don Oliver (1895-1980), Vice-Admiral. 7 Portraits

Sir Roland Giffard Oliver (1882-1967), Judge of High Court of Justice. 2 Portraits

R.A. Oliver, Admiral. 1 Portrait

Sir Thomas Oliver (1852-1942), Physician and industrial hygienist. 1 Portrait

Vic Oliver (1897-1964), Comedian, actor and musician. 1 Portrait

Victor Oliver (1898-1964), Conductor. 1 Portrait

Sir William Pasfield Oliver (1901-1981), Lieutenant-General. 1 Portrait

Miss Oliver (active 1765). 1 Portrait

Mrs Oliver (active 1860s). 1 Portrait

John Oliver-Bellasis (1900-1979), Lieutenant-Colonel, Justice of the Peace and Deputy Lieutenant for Hampshire. 3 Portraits

Thomas Olivers (baptised 1725-1799), Methodist preacher and hymn writer. 1 Portrait

Sydney Haldane Olivier, 1st Baron Olivier (1859-1943), Colonial civil servant, politician and author. 6 Portraits

Charles Harold Arthur Olivier (1912-1992), Brigadier and author. 2 Portraits

Dacres Olivier (1831-1919), Rector of Wilton and Canon of Salisbury. 1 Portrait

Edith Olivier (1872-1948), Writer; Mayor of Wilton. 11 Portraits

Emma Selina Olivier (née Eden) (circa 1835-1908), Wife of Dacres Olivier; daughter of Robert Eden. 3 Portraits

Hon. Julie Kate Olivier (1966-), Actress; daughter of Laurence Olivier and Joan Plowright. 1 Portrait

Laurence Kerr Olivier, Baron Olivier (1907-1989), Actor, producer and director. 111 Portraits

Noel Olivier (1892-1969), Doctor. 2 Portraits

Hon. Richard Olivier (1961-), Theatre director; son of Laurence Olivier and Joan Plowright. 2 Portraits

Hon. Tamsin Olivier (1963-), Actress; daughter of Laurence Olivier and Joan Plowright. 1 Portrait

William Herbert Olivier (1904-1992), Lieutenant-Colonel. 11 Portraits

Dame Kathleen Ollerenshaw (née Timpson) (1912-2014), Mathematician, politician and Lord Mayor of Manchester. 1 Portrait

John Sheldon Olliff (1908-1951), Tennis player, author and sportsjournalist. 5 Portraits

Alfred Ollivant (1798-1882), Bishop of Llandaff. 5 Portraits

Martin Spencer Ollivant (1922-2001), Captain, Royal Navy. 1 Portrait

(Olivier) Émile Ollivier (1825-1913), Prime Minister of France. 2 Portraits

Charles Sandford Olmsted (1853-1918), Bishop of Colorado. 1 Portrait

Charles Tyler Olmsted (1842-1924), Bishop of Central New York. 1 Portrait

Sir Colman Michael O'Loghlen, 2nd Bt (1819-1877), Irish lawyer and politician; MP for County Clare. 2 Portraits

Sir William Olpherts (1822-1902), Army officer. 1 Portrait

Olaf Olsen (1919-2000), Actor. 1 Portrait

Julius Olsson (1864-1942), Marine painter. 5 Portraits

Isaac Oluwole (1852-1932), Assistant Bishop of Lagos. 1 Portrait

Redivivus Oliver. 1 Portrait

Pierce Charles de Lacy O'Mahony (né Mahony) (1850-1930), Politician and philanthropist. 1 Portrait

Omai (circa 1753-circa 1780), First Tahitian to visit England. 5 Portraits

C. O'Malley. 1 Portrait

Sir Edward Loughlin O'Malley (1842-1932), Judge. 1 Portrait

Ellen O'Malley (died 1961), Actress. 1 Portrait

George O'Malley (1780-1843), Major-General. 1 Portrait

Mary O'Malley. 2 Portraits

Sir Owen St Clair O'Malley (1887-1974), British Ambassador to Poland and Portugal. 8 Portraits

Tony O'Malley (1913-2003), Painter. 2 Portraits

William O'Malley (1853-1939), Politician and journalist. 7 Portraits

William Joseph O'Malley (1892-1917), Accountant and army officer; son of William O'Malley. 2 Portraits

Qaboos Bin Said Al Said, Sultan of Oman (1940-). 1 Portrait

Charles Oman (died 1825), Vintner's boy. 1 Portrait

Sir Charles William Chadwick Oman (1860-1946), Professor of Modern History at Oxford University, military historian and Conservative politician; MP for Oxford University. 7 Portraits

John Wood Oman (1860-1939), Theologian. 1 Portrait

Sir David Bruce Omand (1947-), Visiting Professor, King’s College London, Security and Intelligence Co-ordinator and Permanent Secretary, Cabinet Office. 1 Portrait

Kate O'Mara (1939-), Actress. 1 Portrait

Yohana Majani Omari (active 1950s), Assistant Bishop of Central Tanganyika. 1 Portrait

Joan Cowell O'Meara (née Ridley) (1903-1983), Tennis player; wife of Daniel Joseph Patrick O'Meara. 4 Portraits

Charles Vernon Ommanney (1872-1952), Lieutenant-Colonel, Indian Army. 2 Portraits

Edward Aislabie Ommanney (circa 1807-1884), Clergyman. 1 Portrait

Sir Erasmus Ommanney (1814-1904), Admiral. 1 Portrait

Francis Downes Ommanney (1903-1980), Marine Biologist. 4 Portraits

Honoria Catherine Ommanney (née Lawrence), Wife of Charles Vernon Ommanney. 2 Portraits

Sir John Acworth Ommanney (1773-1855), Admiral. 3 Portraits

Thomas Arthur O'Mullally (Count Lally de Tolendal) (1702-1766), Soldier. 2 Portraits

Jacqueline Lee Bouvier Kennedy Onassis (1929-1994), Publisher and editor; former wife of John Kennedy, and later Aristotle Onassis. 9 Portraits

Johann Gerhard Oncken (1800-1884), Baptist preacher. 1 Portrait

Michael Ondaatje (1943-), Writer. 1 Portrait

Sir (Philip) Christopher Ondaatje (1933-), Financier, writer, philanthropist and patron of the arts. 3 Portraits

Catherine Maria O'Neal (died 1796), Actress; third wife of Charles Lee Lewes. 1 Portrait

Charlie O'Neale (1978-), Model. 1 Portrait

Alexander Henry O'Neil (1907-1997), Bishop of Fredericton, Canada. 1 Portrait

Henry Nelson O'Neil (1817-1880), Painter. 3 Portraits

Peggy O'Neil (1898-1960), Actress and singer. 5 Portraits

Charles Henry St John O'Neill, Earl O'Neill (1779-1841), Landowner. 1 Portrait

Onora Sylvia O'Neill, Baroness O'Neill of Bengarve (1941-), Philosopher, writer and academic. 2 Portraits

Georgina Mary (née Montagu Douglas Scott), Lady O'Neill (1940-), Wife of 4th Baron O'Neill; daughter of Lord George Francis John Montagu Douglas Scott. 6 Portraits

Charles O'Neill (1849-1918), Irish politician. 1 Portrait

Sir Con Douglas Walter O'Neill (1912-1988), Foreign Office ambassador. 2 Portraits

Hon. (Louisa) Henrietta Valdivia O'Neill (1879-1965), Daughter of 2nd Baron O'Neill; wife of Charles Edward Norman Leith-Hay. 10 Portraits

Herbert Charles O'Neill (1879-1953), Journalist and editor. 1 Portrait

John O'Neill (1778-1858), Shoemaker, poet and author. 1 Portrait

John Stephen Lanchester O'Neill (died 1969), Colonel. 1 Portrait

Norman O'Neill (1875-1934), Composer. 1 Portrait

Oona Chaplin (née O'Neill) (1925-1991), Wife of Charlie Chaplin; daughter of Eugene O'Neill and Agnes Boulton. 15 Portraits

Sir Phelim O'Neill (1604?-1653), Irish rebel. 2 Portraits

Robert John O'Neill (1936-), Academic, war historian and strategist. 1 Portrait

Terry O'Neill (1938-), Photographer. 2 Portraits

Charles Talbut Onions (1873-1965), Lexicographer and grammarian. 1 Portrait

(George) Oliver Onions (1873-1961), Novelist. 2 Portraits

Yoko Ono (1933-), Artist; second wife of John Lennon. 9 Portraits

Bunty O'Nolan (active 1926), Actress. 4 Portraits

George Onslow, 1st Earl of Onslow (1731-1814), Politician; MP for Surrey. 2 Portraits

Thomas Onslow, 2nd Earl of Onslow (1754-1827), Eldest son of George Onslow, 1st Earl of Onslow. 1 Portrait

William Hillier Onslow, 4th Earl of Onslow (1853-1911), Governor of New Zealand. 10 Portraits

Richard William Alan Onslow, 5th Earl of Onslow (1876-1945), Diplomat and Civil Servant. 6 Portraits

Violet Marcia Catherine Warwick (née Bampfylde), Countess of Onslow (died 1954), Wife of 5th Earl of Onslow; daughter of 3rd Lord Poltimore. 1 Portrait

William Arthur Bampfylde Onslow, 6th Earl of Onslow (1913-1971), Soldier and Assistant Chief Whip. 1 Portrait

Richard Onslow, 1st Baron Onslow (1654-1717), Speaker of the House of Commons. 5 Portraits

Lady June Ann Onslow (née Hay) (1932-2002), Wife of Baron Onslow of Woking; daughter of 14th Earl of Kinnoull. 5 Portraits

Lady Mary Florence Violet Margaret Onslow (Lady Garside) (1908-1970), Former wife of George Garside; daughter of 5th Earl of Onslow. 6 Portraits

Arthur Onslow (1691-1768), Speaker of the House of Commons. 13 Portraits

Arthur Onslow (1746-1817), Dean of Worcester. 1 Portrait

Denzil Roberts Onslow (1839-1908), Conservative politician; MP for Guildford. 1 Portrait

Frank Herbert Onslow (1899-1970), Son of M.R.S. Onslow. 9 Portraits

George Onslow (1731-1792), Politician, army officer and nephew of Arthur Onslow. 1 Portrait

Guildford James Hillier Onslow (1814-1882), Politician; MP for Guildford. 3 Portraits

Hon. (Victor Alexander Herbert) Huia Onslow (1890-1922), Biochemist; son of 4th Earl of Onslow. 2 Portraits

Hon. Lena Barbara Joan Onslow (née Ogilvie-Grant) (1907-1981), Wife of Frank Herbert Onslow; daughter of Trevor Ogilvie-Grant, 4th Baron Strathspey. 27 Portraits

Maud Onslow, Hair stylist. 2 Portraits

Richard Onslow (1527 or 1528-1571), Lawyer and Speaker of the House of Commons. 1 Portrait

Sir Richard Onslow, Bt (1741-1817), Admiral. 3 Portraits

Sir Richard George Onslow (1904-1975), Admiral. 1 Portrait

Roger Cranley Seafield Onslow (1935-), Son of Frank Herbert Onslow. 6 Portraits

Gourishanker Oodeshanker (born 1805), Indian administrator. 1 Portrait

Lady Susan Harriet Catherine Opdebeck (née Douglas-Hamilton) (1814-1889), Figure of scandal. 1 Portrait

W. Openshaw. 1 Portrait

Amelia Opie (1769-1853), Novelist and poet; second wife of John Opie. 8 Portraits

Evelyn Arnold Opie (1905-1990), Matron of King's College Hospital. 3 Portraits

Iona Margaret Balfour Opie (1923-), Folklorist. 1 Portrait

John Opie (1761-1807), Portrait and history painter. 13 Portraits

Julian Opie (1958-), Artist. 1 Portrait

Mary Opie (née Bunn) (active 1782-1795), First wife of John Opie; later married Major Edwards. 1 Portrait

William Alfred Opie (1901-1977), Air Vice-Marshal. 1 Portrait

Nevada, Duchess of Oporto (1885-1941), Wife of Prince Alfonso of Braganza, Duke of Oporto. 1 Portrait

Julie Opp (Mrs William Faversham) (1871-1921), Actress. 1 Portrait

Adolph Paul Oppé (1878-1957), Art historian and art collector. 2 Portraits

Lady Bridget Sarah Oppenheim (née Sinclair) (1947-), Wife of Nicholas Anthony Oppenheim; daughter of 19th Earl of Caithness. 2 Portraits

Sir Duncan Morris Oppenheim (1904-2003), Businessman, artist and arts administrator. 1 Portrait

Edward Phillips Oppenheim (1866-1946), Novelist. 13 Portraits

Elsie Clara Oppenheim (née Hopkins) (died 1946), Wife of Edward Phillips Oppenheim. 2 Portraits

Geraldine Oppenheim (born 1897), Daughter of Edward Phillips Oppenheim. 2 Portraits

Mrs O. Oppenheim. 1 Portrait

Sally Oppenheim-Barnes, Baroness Oppenheim-Barnes (1930-), Social worker and politician; MP for Gloucester. 2 Portraits

Michael Bernard Grenville Oppenheimer, 3rd Baron Oppenheimer (1924-), University lecturer in politics. 3 Portraits

(Laetitia) Helen (née Munro-Lucas-Tooth), Lady Oppenheimer (1926-), Writer on moral and philosophical theology; wife of Sir Michael Oppenheimer, 3rd Bt; daughter of Sir Hugh Munro-Lucas-Tooth, 1st Bt. 14 Portraits

Mrs Louis Oppenheimer. 5 Portraits

Max Ophuls (né Max Oppenheimer) (1902-1957), German director. 2 Portraits

Alison Opyrchal, Archive Assistant, National Portrait Gallery. 1 Portrait

Albert Edward Oram, Baron Oram (1913-1999), Politician and teacher. 1 Portrait

Edward Oram (active 1766-1799), Landscape painter. 1 Portrait

James Oram, Cloakroom Attendant, House of Commons. 1 Portrait

Sir Matthew Henry Oram (1885-1969), Barrister. 1 Portrait

Walter Charles Oram (circa 1875-1927), Physician. 1 Portrait

Frederick Henry, Prince of Orange, Count of Nassau (1584-1647), Prince of Orange. 16 Portraits

Sir Hugh William Orange (1866-1956), Educationist. 2 Portraits

Jason Orange (1970-), Musician; dancer and singer for Take That. 1 Portrait

Dominick Browne, 1st Baron Oranmore and Browne (1787-1860), Politician: MP for County Mayo. 1 Portrait

Christina (née Guthrie), Lady Oranmore and Browne (1834-1887), Wife of 2nd Baron Oranmore and Browne; daughter of Alexander Guthrie. 1 Portrait

Geoffrey Henry Browne, 3rd Baron Oranmore and Browne (1861-1927), Irish politician. 9 Portraits

Olwen Verena (née Ponsonby), Lady Oranmore and Browne (1876-1927), Wife of 3rd Baron Oranmore and Browne; daughter of 8th Earl of Bessborough. 5 Portraits

Dominick Geoffrey Edward Browne, 4th Baron Oranmore and Browne (1901-2002), Son of 3rd Baron Oranmore and Browne. 7 Portraits

Mildred Helen (née Egerton), Lady Oranmore and Browne (later Hon. Mrs Dalrymple) (1903-1980), First wife of 4th Baron Oranmore and Browne. 3 Portraits

Maurice Orbach (1902-1979), Labour politician; MP for Willesden East and Stockport South. 14 Portraits

Roy Kelton Orbison (1936-1988), Singer and songwriter. 1 Portrait

William Orbit (1956-), Musician, composer and record producer. 1 Portrait

Sir George Orby Wombwell, 4th Bt (circa 1833-1913), Soldier and landowner. 1 Portrait

Bill Orchard (1940-), Photographer. 1 Portrait

Henry Ben Orchard (died 1937), Chief Accountant of the Bank of England. 2 Portraits

Paul Orchard (1739-1812), Politician and Colonel of the Northern Regiment of the Devon militia. 1 Portrait

Robert Orchard (active 1803), Grocer and tea dealer in Soho. 1 Portrait

William Edwin Orchard (1877-1955), Roman Catholic priest and theologian. 1 Portrait

Ellen (née Moxon), Lady Orchardson (circa 1854-1917), Wife of Sir William Quiller Orchardson; daughter of Charles Moxon. 1 Portrait

Sir William Quiller Orchardson (1832-1910), Portrait and subject painter. 19 Portraits

Baroness Emma Magdalena Rosalia Maria Josefa Barbara Orczy (1865-1947), Novelist. 9 Portraits

Boris Ord (1897-1961), Organist, composer and choirmaster. 1 Portrait

William Ord (1781-1855), Politician; MP for Morpeth and Newcastle-upon-Tyne. 2 Portraits

Lady Eileen Orde (née Wellesley) (1887-1952), Wife of Cuthbert Julian Orde; daughter of 4th Duke of Wellington. 8 Portraits

Jane Orde (1921-1995), Daughter of Cuthbert Julian Orde. 4 Portraits

Sir John Orde, Bt (1751-1824), Naval officer and politician. 1 Portrait

Julian Orde (1917-1974), Daughter of Cuthbert Julian Orde. 4 Portraits

Margaret Florence (née Fearnley-Whittingstall), Lady Orde Browne (died 1978), Wife of Sir Granville St John Orde Browne. 7 Portraits

Jean Ordner, Managing Director, Renault. 1 Portrait

Miriam O'Reilly (1957-), Television presenter. 1 Portrait

Max O'Rell (1848-1903), Author, traveller and lecturer. 1 Portrait

Edward Russell, Earl of Orford (1652-1727), Admiral. 14 Portraits

Robert Walpole, 1st Earl of Orford (1676-1745), Prime Minister. 27 Portraits

Robert Walpole, 2nd Earl of Orford (1701-1751). 1 Portrait

George Walpole, 3rd Earl of Orford (1730-1791), Rake and eccentric. 6 Portraits

Horatio ('Horace') Walpole, 4th Earl of Orford (1717-1797), Writer and collector. 20 Portraits

Horatio Walpole, 1st Earl of Orford (1723-1809). 2 Portraits

Horatio Walpole, 2nd Earl of Orford (1752-1822). 1 Portrait

Horatio William Walpole, 4th Earl of Orford (1813-1894), Landowner. 2 Portraits

Louise Melissa Walpole (née Corbin), Countess of Orford (died 1909), Daughter of D.C. Corbin; first wife of 5th Earl of Orford. 15 Portraits

Emily Gladys Walpole (née Oakes), Countess of Orford (active 1917), Second wife of 5th Earl of Orford; daughter of Thomas Henry Royal Oakes. 11 Portraits

Harriet Bettina Frances (née Pellew), Countess of Orford (1820-1886), Wife of 4th Earl of Orford; daughter of Sir Fleetwood Broughton Reynolds Pellew. 1 Portrait

Bryan Organ (1935-), Painter. 6 Portraits

John Foster, 1st Baron Oriel (1740-1828), Speaker of the Irish House of Commons. 1 Portrait

Cait O'Riordan (1965-), Bass guitarist; wife of Elvis Costello. 1 Portrait

Mary (née O'Brien), Countess of Orkney (1755-1831), Daughter of 1st Earl of Orkney; wife of 1st Marquess of Thomond. 2 Portraits

Connie Gilchrist, Countess of Orkney (1864-1946), Actress, dancer and artists' model; wife of 7th Earl of Orkney. 14 Portraits

George Hamilton, 1st Earl of Orkney (1666-1737), Army officer. 5 Portraits

Charlotte Isabella (née Irby), Countess of Orkney (1807-1883), Wife of 5th Earl of Orkney; daughter of 3rd Baron Boston. 2 Portraits

Vittorio Emanuele Orlando (1860-1952), Prime Minister of Italy. 2 Portraits

Amélie Marie ('Maria Amélia') Louise Hélène of Orléans, Queen of Portugal (1865-1951), Queen consort of Carlos I, King of Portugal. 11 Portraits

Eugene Adelaide Louise d'Orleans (1777-1847). 1 Portrait

Marie Clementine Caroline Leopoldine d'Orleans (1817-1907), Daughter of Louis Philippe. 2 Portraits

Augustus Henry Orlebar (1897-1943), RAF officer; First World War flying ace. 1 Portrait

Faith Orlebar (née Bourne) (1867-1951), Diarist; wife of Richard Rouse Boughton Orlebar. 1 Portrait

Michel Fedorowitsch Orloff (died 1861), Russian general. 1 Portrait

Count Serge Orloff-Davidoff (died 1945), Foreign dignitary; husband of Hon. Elizabeth Scott-Ellis. 2 Portraits

Count Grigorii Grigorievich Orlov (1734-1783), Russian statesman. 1 Portrait

Count Alexis Grigorievich Orlov-Tchesmensky (1734-1808), Russian statesman. 1 Portrait

John Benn-Walsh, 1st Baron Ormathwaite (1798-1881), Politician and pamphleteer. 1 Portrait

Jane Benn-Walsh (née Grey), Lady Ormathwaite (1803-1877), Wife of John Benn-Walsh, 1st Baron Ormathwaite. 1 Portrait

Arthur Walsh, 2nd Baron Ormathwaite (1827-1920), Landowner and politician. 4 Portraits

Katherine Emily Mary (née Somerset), Lady Ormathwaite (1834-1914), Wife of 2nd Baron Ormathwaite; daughter of 7th Duke of Beaufort. 1 Portrait

Arthur Henry John Walsh, 3rd Baron Ormathwaite (1859-1937), Politician and Lord-Lieutenant and President of the Territorial Force, County of Radnor. 3 Portraits

Frank Leslie Orme (1898-1968), Lieutenant-Colonel, Director of Royal Insurance Co. Lt and High Sheriff of Cheshire. 2 Portraits

Malcolm Orme (circa 1805-1878), Proctor. 1 Portrait

Robert Orme (1728-1801), Historian of India and East India Company servant. 1 Portrait

Thomas Orme (active 1688), Soldier and one of the 'Portsmouth Captains' cashiered in 1688. 3 Portraits

Sir (Cyril) Berkeley Ormerod (1897-1983), Major and Director of Public Relations for the British Information Services, New York. 3 Portraits

Eleanor Anne Ormerod (1828-1901), Entomologist. 1 Portrait

George Ormerod (1785-1873), County historian. 1 Portrait

Agnes Lucy Ormiston (née Benniworth) (died 1942), Wife of Thomas Lane Ormiston. 3 Portraits

Thomas Lane Ormiston (1867-1954), Lieutenant-Colonel and Justice of the Peace. 2 Portraits

Julia Karin Ormond (1965-), Actress. 1 Portrait

Leonée Ormond (née Jasper) (1940-), Art historian. 1 Portrait

Marguerite Ormond (born 1892), John Singer Sargent's niece. 2 Portraits

Marie Marguerite Renet Ormond (1847-1925), Mother-in-law to John Singer Sargent's sister Violet Ormond (née Sargent). 1 Portrait

Richard Louis Ormond (1939-), Art historian; Director of the National Maritime Museum. 8 Portraits

James Butler, 9th Earl of Ormond and Ossory (1504-1564), Soldier. 1 Portrait

James Butler, 1st Duke of Ormonde (1610-1688), Statesman and royalist soldier; commander of the royalist forces in Ireland. 17 Portraits

James Butler, 2nd Duke of Ormonde (1665-1745), Soldier and Jacobite. 26 Portraits

Mary (née Somerset), Duchess of Ormonde (1665-1733), Lady of the Bedchamber and second wife of 2nd Duke of Ormonde. 11 Portraits

John Butler, 2nd Marquess of Ormonde (1808-1854). 2 Portraits

James Edward William Theobald Butler, 3rd Marquess of Ormonde (1844-1919), Landowner. 6 Portraits

Elizabeth Harriet (née Grosvenor), Marchioness of Ormonde (1856-1928), Wife of 3rd Marquess of Ormonde; daughter of 1st Duke of Westminster. 2 Portraits

James Arthur Wellington Foley Butler, 4th Marquess of Ormonde (1849-1943), State Steward to Earl of Canarvon when Viceroy of Ireland. 3 Portraits

James George Anson Butler, 5th Marquess of Ormonde (1890-1949), Major. 5 Portraits

Frances Susan Elizabeth ('Anne') (née Wandesford), Countess of Ormonde (1754-1830), Wife of 17th Earl of Ormonde; daughter of 1st Earl Wandesford. 1 Portrait

Peter Charles Ormrod (1922-2007), Colonel. 9 Portraits

Sir Roger Fray Greenwood Ormrod (1911-1992), Lord Justice of Appeal. 1 Portrait

Emmeline Ormsby (active 1880s), Actress. 1 Portrait

George Albert Ormsby (1843-1924), Bishop of Honduras and Central America. 1 Portrait

George Frederick Ormsby (1838 or 1839-1901), Captain, 2nd Dragoon Guards. 3 Portraits

Hon. Jane Teresa Denyse Ormsby-Gore (1942-), Interior designer; former wife of Michael Sean O'Dare Rainey; daughter of 5th Baron Harlech. 2 Portraits

Hon. Seymour Fitzroy Ormsby-Gore (1863-1950), Stockbroker and politician; son of 2nd Baron Harlech. 2 Portraits

William Ormsby-Gore (1779-1860), Politician and great-great grandfather of William Ormsby-Gore, 4th Baron Harlech. 1 Portrait

Frederick Charles O'Rorke (1879-1976), Soldier and Government Veterinary Officer. 3 Portraits

Martin O'Rourke (active early 19th century), Swimmer. 1 Portrait

Egon Orowan (1902-1989), Mechanical Engineer; Professor of Mechanical Engineering. 4 Portraits

Raymond d’Audemar Orpen (1837-1930), Bishop of Limerick. 1 Portrait

Sir William Newenham Montague Orpen (1878-1931), Painter, Royal Acadamian. 28 Portraits

Edward Orpin (died 1781), Parish clerk. 1 Portrait

Sir Alan Stewart Orr (1911-1991), Judge, Lord Justice of Appeal. 2 Portraits

Alexandra Sutherland Orr (née Leighton) (1828-1903), Biographer of Robert Browning; sister of Lord Leighton. 1 Portrait

Sir Charles William James Orr (1870-1945), Colonial governor. 4 Portraits

Christopher John ('Chris') Orr (1943-), Artist; Professor and Course Director of Printmaking at the Royal College of Art. 3 Portraits

John Orr (1874-1938), Bishop of Meath and Bishop of Tuam. 1 Portrait

John Orr (1885-1966), Linguist and French scholar. 1 Portrait

Patricia Orr (née Morris) (died 1854), Sister of Sophia Finlay. 1 Portrait

Robert Kemsley ('Robin') Orr (1909-2006), Composer and Professor of Music. 1 Portrait

Carolina Alexina Orred (née Lane-Fox) (1845-1924), Wife of John Cavendish Orred; daughter of George Lane-Fox. 1 Portrait

John Cavendish Orred (1841-1905), Landowner and army officer. 1 Portrait

Matilda Orred (née Thistlethwayte) (died 1879), Wife of George Orred; daughter of Thomas Thistlethwayte. 1 Portrait

M. Orred, Daughter of George Orred. 1 Portrait

Charles Boyle, 4th Earl of Orrery (1674-1731), Soldier and scholar. 3 Portraits

(Charles) Ian Orr-Ewing, Baron Orr-Ewing (1912-1999), Company director, consultant and politician. 13 Portraits

Lady Margaret Frances Susan Orr-Ewing (née Innes-Ker) (1875-1930), Wife of James Alexander Orr-Ewing; daughter of 7th Duke of Roxburghe. 1 Portrait

Sir Ian Leslie Orr-Ewing (1893-1958), Politician; MP for Weston-super-Mare. 7 Portraits

Sir Norman Archibald Orr Ewing, 4th Bt (1880-1960), Brigadier-General. 4 Portraits

Ronald Archibald Orr-Ewing (1912-2002). 2 Portraits

Doris Blanche Orr (née Lee), Lady Orr-Lewis, Former wife of Sir Walter Gibbons, and later wife of Sir John Duncan Orr-Lewis, 2nd Bt; daughter of Charles Lee. 3 Portraits

James Orrock (1829-1913), Painter and art collector. 4 Portraits

Albert William Thomas Orsborn (1886-1967), General of the Salvation Army. 3 Portraits

Phillis Higgins Orsborn (née Higgins) (1891-1986), Leader of the Salvation Army Women's social work in Britain; former wife of Bramwell Taylor and later third wife of Albert William Thomas Orsborn; daughter of Edward John Higgins. 2 Portraits

Count Felice Orsini (1819-1858), Italian revolutionary. 1 Portrait

Christopher Orssich (1947-), Son of Count Robert Orssich. 1 Portrait

Paul Orssich, Son of Count Robert Orssich. 1 Portrait

Rosemary Gladys (née Henderson), Countess Orssich (died 1984), Wife of Count Robert Orssich; daughter of Sir Murrough John Wilson. 1 Portrait

Abraham Ortelius (Ortels) (1527-1598), Cartographer, geographer and creator of the first modern atlas. 1 Portrait

René Ortmans (1863-1949), Violinist. 1 Portrait

Arthur Orton (1834-1898), The Tichborne Claimant. 20 Portraits

Beth Orton (1970-), Singer. 3 Portraits

Charles Orton (active circa 1873), Brother of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

Sir Ernest Frederick Orton (1874-1960), Major-General. 1 Portrait

George Orton (active circa 1873), Shipping butcher, father of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

James Herbert Orton (1884-1953), Zoologist. 1 Portrait

Job Orton (1717-1783), Dissenting minister. 1 Portrait

John Kingsley ('Joe') Orton (1933-1967), Playwright. 11 Portraits

Mary Orton (active circa 1873), Mother of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

Mary Ann Orton (née Bryant) (born 1844), Wife of Arthur Orton, 'the Tichborne Claimant'. 1 Portrait

George Orwell (Eric Arthur Blair) (1903-1950), Novelist and critic. 1 Portrait

Charles Stewart Orwin (1876-1955), Agricultural economist and historian. 2 Portraits

George Osbaldeston (1787-1866), Sportsman and eccentric. 3 Portraits

David Webster Osbaldiston (1794-1850), Actor. 1 Portrait

Sir Algernon Kerr Butler Osborn, 7th Bt (1870-1948), Justice of the Peace and major. 2 Portraits

Beatrice Elliot Kennard (née Greenfield), Lady Osborn (1875-1963), Wife of Sir Algernon Osborn, 7th Bt; daughter of William Bunce Greenfield. 2 Portraits

Hon. Charlotte Jane Osborn (née Kenyon) (1843-1893), Wife of George Montagu Osborn; daughter of 3rd Baron Kenyon. 1 Portrait

Constance Violette (née Rooke), Lady Osborn (died 1988), Justice of the Peace; wife of Sir Danvers Osborn, 8th Bt; daughter of Leonard Frank Rooke. 6 Portraits

Franz Osborn (1905-1955), Pianist. 1 Portrait

Sir Frederick James Osborn (1885-1978), Town and County Planner. 6 Portraits

Guy Osborn. 5 Portraits

Sir John Holbrook Osborn (1922-), Politician. 1 Portrait

Sir Samuel Osborn (1864-1952), Director of Samuel Osborn and Company Ltd. 1 Portrait

Shane Osborn (1970-), Chef. 1 Portrait

Sherard Osborn (1822-1875), Rear-Admiral and writer. 4 Portraits

Sue Osborn, Joint Chief Executive, National Patient Safety Agency. 1 Portrait

William Lushington Osborn (1871-1951), Brigadier-General. 4 Portraits

Lady Olga Katherine Godolphin Osborne (1886-1929), Daughter of 10th Duke of Leeds. 1 Portrait

Lord Sydney Godolphin Osborne (1808-1889), Philanthropist; son of 1st Baron Godolphin. 2 Portraits

Lord William Henry Osborne (1691-1711), Son of 2nd Duke of Leeds. 2 Portraits

Alexander Osborne (active 1794), Royal Edinburgh Volunteer, Inspector-General and Solicitor of Customs. 2 Portraits

Sir Cyril Osborne (1898-1969), Politician; Justice of the Peace. 14 Portraits

Edmund Archibald Osborne (1885-1969), Lieutenant-General. 2 Portraits

Edward Oliver Brudenell Seymour Osborne (1883-1956), Vice-Admiral. 5 Portraits

Edward William Osborne (1845-1926), Bishop of Springfield, Illinois. 1 Portrait

Elsie Osborne (née Gregory), Miniature painter; sister of Yvonne Gregory. 1 Portrait

George Osborne (1971-), Politician; Chancellor of the Exchequer. 1 Portrait

John James Osborne (1929-1994), Playwright, autobiographer and actor. 21 Portraits

John Howe Osborne (1833-1922), Jockey and trainer. 3 Portraits

John William Willoughby Osborne (1833-1881), Army officer and colonial civil servant. 3 Portraits

Kathleen Eliza (née Whitfield), Lady Osborne (died 1953), Wife of Sir Francis Osborne; daughter of George Whitfield. 1 Portrait

Leslie Bartlet Osborne (1900-1989), Surgeon Rear-Admiral. 1 Portrait

Malcolm Osborne (1880-1963), Engraver and teacher. 2 Portraits

Primrose Osborne (née Salt) (1915-2005), Debutante; wife of Anthony Osborne; daughter of H.F. Salt. 5 Portraits

Ralph Bernal Osborne (1808?-1882), Liberal politician; First Secretary of the Admiralty. 5 Portraits

Rosabelle Osborne (died 1958), Matron-in-Chief. 3 Portraits

Thomas Osborne (1853-1920), Jockey. 1 Portrait

William Godolphin Osborne (1804-1899), Military secretary to the Governor General of India. 1 Portrait

(Samuel) Lloyd Osbourne (1868-1947), Novelist; stepson of Robert Louis Stevenson. 2 Portraits

John Michael ('Ozzy') Osbourne (1948-), Singer and songwriter. 1 Portrait

Oscar II, King of Sweden (1829-1907), Reigned 1872-1907. 4 Portraits

Patrick Joseph O'Shaughnessy (1872-1920), Politician; MP for West Limerick. 3 Portraits

Prudence O'Shea, Actress. 2 Portraits

Tessie O'Shea (1914-1995), Singer and comedian. 9 Portraits

William Henry O'Shea (1840-1905), Irish politician. 1 Portrait

Prince Oskar of Prussia (1888-1958), Son of Wilhelm II, Emperor of Germany and King of Prussia. 1 Portrait

Sir William Osler, 1st Bt (1849-1919), Regius Professor of Medicine at Oxford. 1 Portrait

Hugh Edward Mark Osmond (1962-), Businessman. 1 Portrait

Miss Osmond, Actress. 1 Portrait

Elizabeth Sylvia Neville Osmond-Smith (née Moss) (1923-), Wife of Francis Howard Osmond-Smith; daughter of Kenneth Neville Moss. 3 Portraits

Francis Howard Osmond-Smith (died 2002), Captain. 2 Portraits

Reska Fromatt Ospovat (Mrs Wells) (died 1952), Sister of Henry Ospovat. 2 Portraits

(John) Evelyn Denison, 1st Viscount Ossington (1800-1873), Speaker of the House of Commons. 12 Portraits

Charlotte (née Cavendish-Bentinck), Viscountess Ossington (1806-1889), Daughter of 4th Duke of Portland; wife of 1st Viscount Ossington. 1 Portrait

Thomas Butler, Earl of Ossory (1634-1680), Courtier and man of action. 5 Portraits

Aemilia Butler (née van Nassau), Countess of Ossory (1635-1688), Dutch-Anglo Courtier; wife of 6th Earl of Ossory. 2 Portraits

Count Osterman, Russian diplomat. 1 Portrait

Isidore Ostrer (1889-1975), Poet, financier and economist. 27 Portraits

Denis O'Sullivan (1868-1908), American actor and singer. 1 Portrait

Frank O'Sullivan (1937-), Boxing coach. 1 Portrait

Gerard O'Sullivan (1964-), Chef; Chef, Olympic Village, London 2012. 1 Portrait

James O’Sullivan (1834-1915), Bishop of Tuam. 1 Portrait

Maureen O'Sullivan (1911-1998), Film actress. 5 Portraits

Oenone Venetia O'Sullivan (née Carew) (1929-2008), Presenter, scriptwriter and producer at RTÉ Radio; wife of John O'Sullivan; daughter of Sir Thomas Palk Carew, 10th Bt. 3 Portraits

Ronnie O'Sullivan (1975-), Snooker player. 2 Portraits

Lady Mary Oswald (née Kennedy) (1799-1886), Wife of Richard Oswald; daughter of 1st Marquess of Ailsa. 1 Portrait

Alexander Oswald. 3 Portraits

Countess Mari-Ann von Oswald (née von Bismarck) (1929-1981), Daughter of Otto Christian Archibald, Prince von Bismarck-Schonhausen; wife of Egbert von Oswald. 12 Portraits

Maude Oswald (née Smith-Barry) (died 1936), Wife of Richard Alexander Oswald; daughter of James Hugh Smith-Barry. 1 Portrait

Oswald Charles Williamson Oswald (1863-1938), Brigadier-General. 2 Portraits

Richard Alexander Oswald (1771-1841), Liberal politician: MP for Ayrshire. 1 Portrait

Oswald. 1 Portrait

Carolina Otéro (1868-1965), Dancer and actress, known as 'La Belle Otéro'. 3 Portraits

Lisandro Otero González (1932-2008), Cuban novelist and journalist. 2 Portraits

Salvius Otho (32-69), Emperor of Rome. 1 Portrait

Arthur O'Toole (born 1538), Soldier of fortune. 1 Portrait

Gerard ('Ged') O'Toole, Original member of 'Frankie Goes to Hollywood'. 1 Portrait

Kate O'Toole (1960-), Actress; daughter of Peter O'Toole and Sian Phillips. 3 Portraits

Mark O'Toole (1964-), Musician; bassist for Frankie Goes To Hollywood. 3 Portraits

Peter O'Toole (1932-2013), Actor. 12 Portraits

Otori Keisuke (1833-1911), Japanese army commander. 1 Portrait

Mrs Frank Otter, Australian foreign visitor. 1 Portrait

Hugh Van Lynden Otter-Barry (1887-1971), Bishop of Mauritius. 4 Portraits

(Richard) Bruce Hamilton Ottley (1890-1947), Banker; supporter and connoisseur of music and the ballet; Chairman of the United Kingdom Gas Corporation. 3 Portraits

Fielding Hay Ottley (1877-1958), Hon. Canon of Canterbury. 1 Portrait

Otto von Habsburg, Archduke of Austria (1912-2011), Eldest son of Charles I of Austria; Politician. 3 Portraits

Otto, King of Greece (1815-1867), Son of King Louis I of Bavaria. 2 Portraits

Sir Arthur John Otway, 3rd Bt (1822-1912), Politician. 1 Portrait

Eliza Price Noble (née Campbell), Lady Otway (later Mrs Leathem) (1830-1910), Former wife of Sir George Graham Otway, 2nd Bt, and later wife of Thomas William Crawford Leathem; daughter of John Campbell. 8 Portraits

Sir George Graham Otway, 2nd Bt (1816-1881), Naval officer. 1 Portrait

Grace Otway (died 1935), Actress. 1 Portrait

Sir Robert Waller Otway, 1st Bt (1770-1846), Admiral. 1 Portrait

Sarah Otway, Wife of Francis Otway of River Hill, Kent. 2 Portraits

Thomas Otway (1652-1685), Dramatist. 9 Portraits

Mrs Otway (active late 18th century). 1 Portrait

Nicholas Oudart (active 1640), Secretary to Sir Edward Walker, Garter King of Arms. 1 Portrait

Vizier of Oudh. 1 Portrait

Nicolas Charles Oudinot, duc de Reggio (1767-1847), French soldier. 2 Portraits

Gerard Kango Ouedraogo (1925-), Prime Minister of Upper Volta (now Burkina Faso). 1 Portrait

William Oughtred (1575-1660), Mathematician. 7 Portraits

Ouida (Marie Louise de la Ramée) (1839-1908), Novelist. 6 Portraits

Herman Ould (1885-1951), Dramatist, poet and critic. 6 Portraits

Walter William Ouless (1848-1933), Portrait painter. 11 Portraits

Brian Oulton (1908-1992), Actor. 1 Portrait

Ralph Henry Lefroy Oulton (1904-1991), Brigadier. 1 Portrait

Thérèse Oulton (1953-), Painter. 2 Portraits

Wilfred Ewart Oulton (1911-1997), Air Vice-Marshal. 1 Portrait

Anna Caroline Oury (née de Belleville) (1808-1880), Pianist and composer. 1 Portrait

Herman George Ouseley, Baron Ouseley (1945-), Politician; President, Different Realities Partnership Ltd. 1 Portrait

Sir Frederick Arthur Gore Ouseley, 2nd Bt (1825-1889), Church musician and composer. 6 Portraits

Gideon Ouseley (1762-1839), Irish Methodist preacher. 1 Portrait

Sir Gore Ouseley, 1st Bt (1770-1844), Diplomat and oriental scholar. 3 Portraits

Sir James Outram, 1st Bt (1803-1863), Lieutenant-General. 10 Portraits

Joseph Outram (1766-1802), Diplomat and oriental scholar. 2 Portraits

Marjorie Isabella Outram, Physician; daughter of Sir Francis Davidson Outram. 2 Portraits

Ernest Carrington Ouvry (1866-1951), Solicitor. 1 Portrait

Horace Ové (1939-), Film-maker and photographer. 1 Portrait

Douglas Overall (1892-1978), Chartered surveyor and property developer. 1 Portrait

John Overall (1560-1619), Bishop of Norwich. 18 Portraits

Johann Friedrich Overbeck (1789-1869), Painter. 1 Portrait

Sir Robert Leslie Overbury (1887-1955), Political secretary. 4 Portraits

Sir Thomas Overbury (1581-1613), Poet and courtier. 18 Portraits

Walter Henry Overs (1870-1934), Bishop of Liberia. 1 Portrait

Samuel Jones Loyd, 1st Baron Overstone (1796-1883), Banker. 5 Portraits

Harriet (née Wright), Lady Overstone (died 1864), Wife of Baron Overstone; daughter of Ichabod Wright. 2 Portraits

Sir Arnold Edersheim Overton (1893-1975), Political secretary. 3 Portraits

John Overton (1639 or 1640-1713), Map and print publisher. 1 Portrait

Aida Overton Walker (1880-1914), Actress, dancer and singer. 3 Portraits

John Campbell White Overtoun, 1st Baron Overtoun (1843-1908), Philanthropist and chemical manufacturer. 4 Portraits

Stephen Michael James ('Steve') Ovett (1955-), Middle distance runner. 2 Portraits

Sir Esmond Ovey (1879-1963), Diplomat. 2 Portraits

David Anthony Llewellyn Owen, Baron Owen (1938-), Labour politician; Foreign Secretary and co-founder of the Social Democratic Party. 8 Portraits

Sir Alfred George Beech Owen (1908-1975), Director. 1 Portrait

Alun Davies Owen (1925-1994), Playwright. 3 Portraits

Caroline Owen, Niece of Wenda Parkinson (née Rogerson). 1 Portrait

C. Owen, President, Finchley Harriers. 1 Portrait

David Lanyon Lloyd Owen (1917-2001), Major-General. 1 Portrait

Dawn Owen (active 1937), Tennis player; daughter of Sefton Owen. 1 Portrait

Derwyn Trevor Owen (1876-1947), Archbishop of Toronto and Primate of Church of England in Canada. 1 Portrait

Sir Douglas Owen (1850-1920), Barrister. 4 Portraits

Sir Edward Campbell Rich Owen (1771-1849), Naval officer. 1 Portrait

Edward Rodney ('Roddy') Owen (born 1856), Sportsman. 2 Portraits

Emmie Owen (1871-1905), Actress and opera singer. 1 Portrait

Frank Owen (1905-1979), Journalist, writer and broadcaster. 8 Portraits

George Douglas Owen (1887-1965), Colonial secretary. 1 Portrait

Sir Goronwy Owen (1881-1963), Politician and Lieutenant-Colonel. 5 Portraits

Hugh Owen (1784-1861), Soldier in service of Portugal. 1 Portrait

Sir Hugh Owen (1835-1916), Public health and water local government commissioner. 1 Portrait

James Owen (1654-1706), Nonconformist minister. 1 Portrait

John Owen (1563 or 1564-1622?), Latin poet. 7 Portraits

Sir John Owen (1600-1666), Welsh royalist commander and vice admiral for North Wales. 3 Portraits

John Owen (1616-1683), Puritan divine. 22 Portraits

John Owen (1766-1822), Missionary society administrator. 1 Portrait

John Owen (1854-1926), Bishop of St David's. 2 Portraits

Sir (William) Leonard Owen (1897-1971), Atomic engineer. 8 Portraits

Leslie Owen (1886-1947), Bishop of Lincoln. 3 Portraits

L.G. Owen, Tennis player. 1 Portrait

Hon. Margaret Owen (née Denman) (1815-1899), Former wife of Henry William Macaulay and of Edward Cropper, and later wife of John Owen; daughter of 1st Baron Denman. 1 Portrait

Mark Owen (1972-), Singer, songwriter and member of 'Take That'. 1 Portrait

Michael Owen (1979-), Footballer. 1 Portrait

Nicholas Owen (died 1606), Carpenter and Jesuit lay brother. 1 Portrait

Pat Owen (active 1937), Tennis player; daughter of Sefton Owen. 1 Portrait

Philip Loscombe Wintringham Owen (1920-2001), Soldier, lawyer, Justice of the Peace and politician; MP. 10 Portraits

Reginald Herbert Owen (1887-1961), Bishop of New Zealand. 1 Portrait

Sir Richard Owen (1804-1892), Naturalist, comparative anatomist and palaeontologist. 32 Portraits

Richard Arthur James Owen (1910-1997), Rear-Admiral. 2 Portraits

Robert Owen (1771-1858), Pioneer of practical socialism. 7 Portraits

Rowland Hubert Owen (1903-1995), Senior UK trade commissioner in India, Burma and Ceylon. 2 Portraits

Ruth Owen (née Knaggs), Wife of George Douglas. 1 Portrait

Samuel Owen (1769-1857), Watercolour painter. 1 Portrait

Sidney George Owen (1858-1940), Classical scholar. 2 Portraits

S. Owen. 1 Portrait

Ursula Margaret Owen (1937-), Co-founder and Managing Director, Virago Books; Editor and Chief Executive, Index on Censorship. 3 Portraits

Wilfred Owen (1893-1918), Poet. 1 Portrait

William James Owen (1901-1981), Politician, adult education class teacher and lecturer. 3 Portraits

Sir Charles John Owens (circa 1845-after 1912), General Manager of the London and South-Western Railway. 1 Portrait

Patricia Owens (1925-2000), Actress. 1 Portrait

Dame Anne Elizabeth Owers (née Spark) (1947-), Campaigner, administrator and policy advisor; HM Chief Inspector of Prisons. 1 Portrait

Gerald Robert Owst (1894-1962), Professor of Education, University of Cambridge. 1 Portrait

William Owtram (Outram) (baptised 1626-1679), Church of England clergyman. 1 Portrait

William Oxberry (1784-1824), Actor. 1 Portrait

Henry Oxburgh (died 1716), Jacobite Insurgent. 3 Portraits

R. Oxenaar (active 1963). 1 Portrait

Marie Adelaide Oxenbridge (née Maude) (1814-1897), Former wife of 2nd Earl of Yarborough, and later wife of William J. Monson, Viscount Oxenbridge; daughter of 3rd Viscount Hawarden. 1 Portrait

Helen Oxenbury (1935-), Children's books illustrator. 1 Portrait

Charles Oxenden (1800-1874), Clergyman. 1 Portrait

Elizabeth Oxenden (née Wilson), First wife of Montagu Oxenden; daughter of Richard Wilson. 1 Portrait

Sir Henry Oxenden, 7th Bt (1756-1838). 1 Portrait

Montagu Oxenden (1799-1880), Clergyman; son of Sir Henry Oxenden, 7th Bt. 1 Portrait

John Oxenford (1812-1877), Playwright and translator. 1 Portrait

John Oxenham (1852-1941), Journalist, novelist and poet. 3 Portraits

William Oxenham (1800-1863), Teacher and religious writer. 1 Portrait

Margaret Emma Alice ('Margot') Asquith (née Tennant), Countess of Oxford and Asquith (1864-1945), Society hostess; second wife of 1st Earl of Oxford and Asquith; daughter of Sir Charles Tennant, 1st Bt. 51 Portraits

John de Vere, 15th Earl of Oxford (1490?-1540), Courtier. 2 Portraits

Edward de Vere, 17th Earl of Oxford (1550-1604), Courtier. 3 Portraits

Henry de Vere, 18th Earl of Oxford (1593-1625), Hereditary Great Chamberlain. 4 Portraits

Robert de Vere, 19th Earl of Oxford (1575-1632), Soldier and nobleman. 2 Portraits

Aubrey de Vere, 20th Earl of Oxford (1626-1703), Soldier. 2 Portraits

Robert Harley, 1st Earl of Oxford (1661-1724), Lord Treasurer. 14 Portraits

Edward Harley, 2nd Earl of Oxford (1689-1741), Patron of letters and collector. 12 Portraits

Jane Elizabeth (née Scott), Countess of Oxford (1773-1824), Wife of 5th Earl of Oxford. 2 Portraits

Eliza (née Nugent), Countess of Oxford and Mortimer (circa 1806-1877), Wife of 6th Earl of Oxford and Mortimer; daughter of 1st Marquess of Westmeath. 1 Portrait

Herbert Henry Asquith, 1st Earl of Oxford and Asquith (1852-1928), Prime Minister. 70 Portraits

Julian Edward George Asquith, 2nd Earl of Oxford and Asquith (1916-2011), Colonial administrator. 2 Portraits

(John) Donald Alexander Arthur Makgill, 12th Viscount Oxfuird (1899-1986). 1 Portrait

Henry Oxinden (Oxenden) (1609-1670), Gentleman and letter-writer. 2 Portraits

Robert Dickinson Oxland (1889-1959), Air Vice-Marshal. 3 Portraits

Elizabeth Oxley (active 1679), Maid to Mr Bird. 1 Portrait

Reginald Stewart Oxley (1863-1951), Army officer. 5 Portraits

William Oxman (or Orsingham) (active 1660s), Preacher of the doctrines of the Fifth Monarchy Men. 2 Portraits

Robert Wardlow Oxspring (1919-1989), Group Captain. 3 Portraits

Oyama Iwao (1842-1916), Field Marshal; a founder of the Imperial Japanese Army. 1 Portrait

David Richard Oyebode (1898-1960), Bishop of Ibadan, Nigeria. 1 Portrait

Jan Oyra (born 1888), Dancer. 7 Portraits

William Maingay Ozanne (1891-1966), Major-General. 7 Portraits

Rifat Ozbek (1953-), Fashion designer. 2 Portraits