Treaty of September 17, 1818
On September 17, 1818, at St. Marys, Ohio, a treaty was signed between U.S. commissioners Lewis Cass and Duncan McArthur and representatives of the Wyandot, Seneca, Shawnee, and Ottawa tribes. This treaty supplemented a previous agreement from 1817, reserving lands for the tribes and guaranteeing annuities. Specific tracts for each tribe were delineated, emphasizing their perpetual use. The treaty established protections against unauthorized land conveyance and required Senate ratification, reaffirming federal commitments to Native American rights and land.