The Lake Simcoe–Lake Huron Purchase, registered as Crown Treaty Number Sixteen, was signed November 18, 1815 between the Ojibwa and the government of Upper Canada.
The territory included a quantity of land that later became parts of the townships of Oro, Vespra, Medonte, Flos, Tay and Tiny in Simcoe County.
The signees of the treaty on the side of the British included Provincial Commissioners Elisha Beman and Henry Proctor, Captain W. M. Cochrane (commander of light infantry), Lieutenant Alexander Ferguson of the Indian Department, interpreter William Gruet and James Givins on behalf of the Crown.
The signees of the treaty on the side of the Chippeway Chiefs included Kinaybicoinini, Aisance and Misquuckkey.
The text of the treaty is found in the holdings at the Simcoe County Archives in Barrie, Ontario, Canada.