This miniature derives from a portrait by Thomas Phillips painted in 1806. Versions of the Bone copies date from 1806 to 1812 and three which are identical to the present portrait are in the British Royal Collection (see R. Walker, The Eighteenth and Nineteenth Century Miniatures in the Collection of Her Majesty The Queen, Cambridge, 1992, pp. 277 and 280, nos. 753 and 755, and V. Remington, Victorian Miniatures in the Collection of Her Majesty The Queen, London, 2010, I, p. 77, no. 110).