Princess Sophia, 1777-1848, daughter of George III, never married but formed an attachment to General Thomas Garth, an equerry 33 years older than herself and of notorious ugliness; a child was born secretly at Weymouth in August 1800. Later, in a letter to her brother, George IV, she referred to herself and her three unmarried sisters as 'four old cats... I wonder you do not vote for putting us in a sack and drowning us in the Thames (see H. Hibbert, George IV, Prince of Wales 1762-1811, 1972, pp.263-5).
There are two drawings of 1802 by Edridge of Princess Sophia at Windsor (A.P. Oppé, English Drawings, Stuart and Georgian Periods, in the Collection of His Majesty the King at Windsor Castle, 1950, nos.220 and 222), and one of 1804 formerly in the E.M. Hodgkins collection (which also contained Edridge's 1805 portrait of Princess Amelia).