undeterred by this official rebuff, the loyal company resumed survey operations in contravention of the royal proclamation of 1763. colonial agitation continued against the proclamation which led to the treaty of fort stanwix in 1768. significantly the virginia delegation was led by thomas walker and andrew lewis, who led the greenbrier company. this treaty effectively made the ohio river the western bound of colonial expansion. further gains were made by the land speculation companies at the treaty of lochaber, where walker again represented virginia's interests.