Source: Per service record of John W. H. Laughlin, reg. no. 407058.
Family Search: When Corporal Joseph Sutton Pratt was born on 9 August 1897, in York Township, York, Ontario, Canada, his father, George Samuel Pratt, was 39 and his mother, Diana Roberts, was 29. He had at least 1 son and 2 daughters with Mary Elva Major. He lived in York Mills, Toronto, Ontario, Canada in 1922 and Toronto, York, Ontario, Canada in 1931. He registered for military service in 1915. His occupation is listed as metropolitan toronto police force in Toronto, Ontario, Canada. He died on 11 October 1972, in Richmond Hill, York, Ontario, Canada, at the age of 75, and was buried in York Cemetery, Toronto, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 