Joseph Tyrrell
Joseph Burr Tyrrell, geologist, explorer, historian (born 1 November 1858 in Weston, Canada West; died 26 August 1957 in Toronto, ON). Tyrrell explored the vast areas of western and northern Canada, consolidating information gathered by earlier explorers and filling in blank spots on the maps, especially in the Northwest Territories, while working for 17 years for the Geological Survey of Canada (1881–98).