John Montresor

Captain John Montresor
A portrait of John Montresor, by John Singleton Copley, circa 1771
Born	(1736-04-22)22 April 1736 Gibraltar
Died	26 June 1799(1799-06-26) (aged 63) Maidstone, Kent
Allegiance	Kingdom of Great Britain
Service/branch	Corps of Engineers
Rank	Captain
Unit	48th Regiment of Foot
Battles/wars	French and Indian War (Braddock expedition, Siege of Louisbourg, Siege of Quebec), Pontiac's Rebellion, American Revolutionary War (Battles of Lexington and Concord, Battle of Long Island, Battle of Brandywine)
Relations	James Gabriel Montresor (father), Susanna Haswell Rowson (cousin), Robert Haswell (cousin), Samuel Auchmuty (brother-in-law)

Captain John Montresor (22 April 1736 – 26 June 1799) was a British military engineer and cartographer in North America.

Born in Gibraltar 22 April 1736 to British military engineer James Gabriel Montresor and his first wife, Mary Haswell, John Montresor spent his early life there (and presumably on Minorca, where his father was briefly stationed). He was in England between 1746 and 1750, attending Westminster School. He learned the principles of engineering from his father, and in his later teens served as assistant engineer to his father at Gibraltar.

In 1754, he accompanied his father to America, and served as an ensign in the 48th Regiment of Foot on the expedition to Fort Duquesne, also performing as a supernumerary engineer. In the defeat that followed he was wounded, but survived to learn of his promotion to lieutenant days before the battle. He remained in America, serving along the Mohawk River and at Fort Edward, then accompanying British forces to Halifax. In 1758, he was commissioned a practicing engineer in the Corps of Engineers, and as such was present at the siege of Louisbourg, and later, at that of Quebec, there drawing one of the last known portraits of General Wolfe, who died in the deciding battle.