The Robinson Superior Treaty
On September 7, 1850, a treaty was concluded at Sault Ste. Marie between the Hon. W.B. Robinson, representing the government, and nine Ojibwa chiefs and head men. Under its terms the Ojibwa surrendered territory extending some 640 km along the shore of Lake Superior, from Batchawana Bay to the Pigeon River, and northward to the height of land delimiting the Great Lakes drainage area. In return, the Indians were allotted three reserves, a cash settlement and a further small annual payment. The Fort William reserve, assigned to Chief Joseph Peau de Chat and his band, was laid out in 1854 by J.W. Bridgland, P.L.S., substantially as it is today.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.