Arthur St. Clair (March 23, 1737 - August 31, 1818) was an American soldier and politician. He served in the British Army during the French and Indian War before settling in Pennsylvania, where he held local office. During the American Revolutionary War, he rose to the rank of major general in the Continental Army, but lost his command after a controversial retreat from Fort Ticonderoga. After the war, he served as President of the Continental Congress, which during his term passed the Northwest Ordinance. He was then made governor of the Northwest Territory in 1788, and then the portion that would become Ohio in 1800. In 1791, St. Clair commanded the American forces in what was the United States's worst ever defeat against the American Indians. Politically out-of-step with the Jefferson administration, he was replaced as governor in 1802. He died in poverty in Greensburg, Pennsylvania, in 1818 at the age of 81. His remains are buried under a Masonic monument in St. Clair Park.