Fort Sandoské had been. The English Fort Sandusky was not built until 1761 and it was constructed in a different location southeast of the bay. The future site of Venice, Ohio developed near here. That fort was overrun and destroyed in 1763 during Pontiac's War. There was much confusion about the affiliation of trading posts and forts around Sandusky Bay. The French briefly used Fort Sandoské to secure supply and communication between Fort Niagara and Fort Detroit. It was already abandoned by 1754, when French lieutenant and engineer Gaspard-Joseph Chaussegros de Léry passed through the area with forces to reinforce Fort Detroit.
Fort Defiance (Ohio) had agreed not to settle. Until the War of 1812, Fort Defiance was one of the westernmost outposts in Ohio. William Henry Harrison used it as one base for his attacks against Native Americans during Tecumseh's War, and the fort played a role in the War of 1812 as well. The city of Defiance, Ohio, was founded at the fort's location. In 1904, the site of the fort was chosen for the Defiance Public Library. Fort Defiance served as a reference point for defining the boundary line of land cession in the Treaty of Detroit in 1807. This north-south line