William Howe De Lancey

Sir William Howe De Lancey
Sketch of William Howe De Lancey, about 1813
Born	1778 New York City, New York
Died	26 June 1815 (aged 37) Mont-Saint-Jean, United Netherlands
Buried at	Evere, Belgium
Allegiance	United Kingdom
Service/branch	British Army
Years of service	1792–1815
Rank	Colonel
Battles/wars	French Revolutionary Wars Peninsular War Hundred Days

Colonel Sir William Howe De Lancey KCB (1778 – 26 June 1815) was an officer in the British Army during the Napoleonic Wars. He died of wounds he received at the Battle of Waterloo.

De Lancey's ancestors were Huguenots who had emigrated from Caen in France to America following the revocation of the Edict of Nantes in 1685.

Born in New York City, De Lancey was the only son of Stephen De Lancey (1748–1798), who was clerk of the city and county of Albany in 1785, lieutenant-colonel of the 1st New Jersey loyal volunteers in 1782, afterwards chief justice of the Bahamas, and in 1796 governor of Tobago; and who married Cornelia, daughter of the Rev. H. Barclay of Trinity Church, New York. He was the grandson of Major-General Oliver De Lancey, Sr. (1708–1785) and a great-grandson of Etienne de Lancey, who became known as Stephen Delancey (1663–1741).

He married in Edinburgh, on 4 April 1815, Magdalene (1793–1822), one of the three daughters of Sir James Hall of Dunglass, fourth baronet (1761–1832), and his wife Lady Helen Douglas (1762–1837), a daughter of Dunbar Douglas, 4th Earl of Selkirk. De Lancey and Magdalene had no issue.

De Lancey's father, Stephen, and many other members of the De Lancey family of New York, were supporters of King George III during the American Revolution. The United States and Great Britain signed the Treaty of Paris officially ending the war in 1783, and as a result the De Lancey property was confiscated and the family was forced to flee to England.