 In 1791 and 1792 , Jones surveyed the lakeshore of townships east from York , Upper Canada , to the Trent River , from the lakeshore to a distance of one mile ( 1 @.@ 6 km ) from Lake Ontario . Jones and his team had set out from Scarborough to the eastern boundary of the Nassau District , the approximate area of the mouth of the Trent River . From there , they began surveying townships along Lake Ontario travelling westwards . They surveyed in turn Murray Township , then Cramahe Township , Haldimand Township , Hamilton Township , Hope Township , Clarke Township , Darlington Township , Pickering Township , Glasgow Township , York Township and Etobicoke Township . <unk> were then run north to the first concession road . Clarke township had previously been unnamed , Jones was the one to name it . The survey of the west end of the Nassau district finalised the boundary of the Toronto Purchase , which had been agreed upon in principle , but could not be completed because the land areas involved were not well known . On June 13 , 1792 Jones submitted a town plan for Newark , Upper Canada to the Land Board . 
