Clark, George Rogers (1752–1818), an American military leader. As a result of his victories over the British in the Revolutionary War, the peace treaty signed in Paris in 1783 recognized the boundaries of the United States as including all land between Spanish Florida and the Great Lakes, as far west as the Mississippi River.
Clark was born near Charlottesville, Virginia. He was an elder brother of William Clark of the Lewis-Clark Expedition. George was a surveyor in Kentucky, then a district of Virginia, and later represented Kentucky in the colonial legislature. Patrick Henry, governor of Virginia, permitted him to raise a small force of backwoodsmen to fight the British in the Illinois country.
In 1778 Clark captured the British forts at Kaskaskia and Cahokia (on the Mississippi), and Vincennes (on the Wabash). The British retook Vincennes, but Clark led his men on a 180-mile (290-km) cross-country march through deep snow and icy swamps to recapture the fort. Clark retired as a brigadier general in 1783. Virginia granted him a large tract of land in what is now Indiana.