TROUP, Robert, soldier, born in New York city in 1757; died there, 14 January, 1832. He was graduated at Columbia in 1774, studied law under John Jay, and early in 1776 joined the Revolutionary army on Long Island as a lieutenant. He became aide to General Nathaniel Woodhull shortly afterward, was taken prisoner at the battle of Long Island, and confined for some time in the "Jersey" prison-ship, but in the spring of 1777 was exchanged and joined the army in New Jersey. He became aide to General Horatio Gates in August, and participated in the battle of Stillwater, and the surrender of General Burgoyne, 17 October, 1777. In February, 1778, he was appointed by congress secretary of the board of war. On its dissolution in 1779 he went to New Jersey and completed his law studies with Judge William Patterson. After the peace he became judge of the United States district court of New York, held office for several years, and was a member of the assembly. He was the warm personal friend of Alexander Hamilton, and supported him in politics. During his latter years he resided in Geneva, New York, as principal agent of the great Pulteney estate. He published several pamphlets, including "Vindication of the Claim of Elkanah Watson" (New York, 1821), and "Letter on the Lake-Canal Policy of New York" (1822).