Dictionary of National Biography, 1885-1900/Percy, Henry (1785-1825)
PERCY, HENRY (1785–1825), colonel, aide-de-camp to Sir John Moore and to Wellington, fifth son of Algernon Percy, baron Lovaine, who was created Earl of Beverley in 1790, and brother of Hugh Percy [q. v.], bishop of Carlisle, and of Vice-admiral Josceline Percy, was born on 14 Sept. 1785. He was educated at Eton, and on 16 Aug. 1804 appointed lieutenant in the 7th fusiliers. He became captain unattached 9 Oct. 1806, and captain 7th fusiliers on 6 Nov. following. He was aide-de-camp to Sir John Moore at Coruña. On 21 June 1810 he was transferred as captain to the 14th light dragoons. He was taken prisoner with a party of his regiment during the retreat from Burgos in 1812, and was detained in France until the peace. In 1815 he was appointed aide-de-camp to the Duke of Wellington. He brought home the Waterloo despatches, arriving post in London on the evening of 20 June with the despatches and captured eagles, and was next day made C.B., and a brevet lieutenant-colonel from 18 June 1815. He retired on half-pay in 1821, and was returned to parliament for Beeralston, Devonshire, in 1823. Once a gay, handsome young fellow, he prematurely lost his health. He died at his father's house in Portman Square, London, 15 April 1825, in his fortieth year, and was buried in the cemetery of St. Marylebone.
[Foster's Peerage, under ‘Beverley;’ Army Lists; Gent. Mag. 1825, pt. i. p. 567.]