The Gallery holds the most extensive collection of portraits in the world. Search over 215,000 works, 150,000 of which are illustrated from the 16th Century to the present day.

British artists' suppliers, 1650-1950 - I

An online resource, launched in 2006, selectively updated twice yearly. Last updated August 2019. Contributions are welcome, to Jacob Simon at [email protected].

Resources and bibliography Introduction

**Julius Caesar Ibbetson. Artist.

Julius Caesar Ibbetson (1759-1817)is credited with the invention of ‘Gumption’, a mastic-based painting medium (Carlyle 2001 pp.106-8); see also Ibbetson’s book An Accidence or Gamut of Painting in Oil and Water Colours, 2nd ed., 1828 with a recipe for Gumption (transcribed in Rotha Clay, Julius Caesar Ibbetson 1759-1817, 1948, p.138; see also pp.85-6). The medium was used by Sir George Beaumont.

For abbreviations, see Resources and bibliography.

John Inwood, see William Reeves

Found a mistake? Have some extra information? Please contact Jacob Simon at [email protected].