The present miniature compares with a group of portraits by Cosway depicting the children of King George III and Queen Charlotte in the British Royal Collection. Probably painted for the Prince of Wales and listed in the 'Cosway Accounts' of May 1795 (R. Walker, The Eighteenth and Nineteenth Century Miniatures in the Collection of Her Majesty The Queen, Cambridge, 1992, pp. 92-94), three of the portraits depict Princess Mary, Duchess of Gloucester (1776-1857), Princess Sophia (1777-1848) and Princess Amelia (1783-1810). The latter is signed in a similar way to the present portrait 'H.R.H. Princess Amelia Rd Cosway' and at 3 9/16 in. (91 mm.) high, it is of a similar size.

Princess Augusta was the second daughter of King George III. Like her sisters she grew up under the supervision of Lady Charlotte Finch and received lessons in foreign languages, music, art and participated in sports. The king was very protective of his daughters and was reluctant for them to marry and leave home. As his illness developed, the issue of marriage became more and more difficult to resolve and Princess Augusta, despite enjoying a secret relationship with an equerry, Major-General Sir Brent Spencer, never married.