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Ada Lovelace (1815-1852), Mathematician and computer pioneer

(Augusta) Ada King (née Byron), Countess of Lovelace

Sitter associated with 5 portraits
Mathematician; the only child of the poet, Byron ('Ada! Sole daughter of my house and of my heart' - Byron's Childe Harold). Probably through the scientific writer, Mary Somerville, she met Charles Babbage, the computer pioneer. In her Sketch of the Analytical Engine, 1843, she translated from Italian and annotated an article by the Italian mathematician, General Menabrea, on Babbage's calculating machine, demonstrating her command of the principles of the programmed computer. She is sometimes described as the world's first computer programmer.

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D37457

(Augusta) Ada King (née Byron), Countess of Lovelace

by Edward Scriven, published by John Samuel Murray, after Louis Ami Ferrière
stipple engraving, published 15 April 1825 (1820)
NPG D37457

D11137

(Augusta) Ada King (née Byron), Countess of Lovelace

by William Henry Mote, published by John Samuel Murray, and published by Charles Tilt, after Frank Stone
stipple engraving, published 1 June 1832
NPG D11137

D5123

(Augusta) Ada King (née Byron), Countess of Lovelace

by William Henry Mote, after Alfred Edward Chalon
stipple engraving, published 1839
NPG D5123

D5124

(Augusta) Ada King (née Byron), Countess of Lovelace

by William Henry Mote, after Alfred Edward Chalon
stipple engraving, published 1839
NPG D5124

D11136

(Augusta) Ada King (née Byron), Countess of Lovelace

by Walker & Boutall, after Louis Ami Ferrière
photogravure, late 19th century (1820)
NPG D11136