General Sir William Henry Sewell KCB (c.1786 – 13 March 1862) was a senior officer in the British Army.
He was present with Sir John Moore's army at Corunna, Talavera, Busaco, Nivelle, Nive, Bayonne, Orthes, Toulouse and the sieges of Ciudad Rodrigo, Badajoz, as well as several other minor engagements.
[2] After serving on Lord Beresford's staff in Maida and South America in 1807 he stayed on to command a Portuguese cavalry regiment from 1816 to 1818.
[3] In 1854 he returned to England and was made colonel of the 79th Regiment of Foot (Cameron Highlanders),[4] promoted to lieutenant-general [5] and knighted CB.
He had married Georgiana Hacking Hamilton, the second daughter of Sir John Hamilton-Dalrymple, 5th Baronet,[8] in 1831 St George's Cathedral, Madras.