Fort Pitt (Pennsylvania) among Native Americans devastated the tribes of Ohio Valley and the Great Lakes areas. On August 1, 1763, most of the American Indians broke off the siege to intercept the approaching force under Colonel Bouquet. In the Battle of Bushy Run, Bouquet fought off the American Indian attack and relieved Fort Pitt on August 10. In 1772, after Pontiac's War, the British commander at Fort Pitt sold the building to two colonists, William Thompson and Alexander Ross. At that time, the Pittsburgh area was claimed by the colonies of both Virginia and Pennsylvania, which struggled for power over the region.
Tecumseh along the Thames Valley. Tecumseh sought continued British support in order to defend tribal lands against the Americans. However, a much reinforced Harrison led an invasion of Canada. The siege began on May 5, 1813, when a small British force of less than 1,000 men under the command of Major-General Procter, the British commander on the Detroit frontier, and an estimated 1,250 Indian warriors led by Tecumseh and the Wyandot leader, Roundhead, attempted to capture Fort Meigs in northwestern Ohio. The British hoped that the effort would delay an American offensive attack against Detroit, which the British had captured in