Source: Per post of headstone of this soldier by Greg Melanson from the 18th Battalion Facebook Group.
Family Search: When Sergeant William David Elliott was born on 20 February 1894, in Arthur Township, Wellington, Ontario, Canada, his father, Thomas Elliot, was 42 and his mother, Isabella Sherratt, was 42. He had at least 3 sons and 3 daughters with Lena Geraldine Foshay. He lived in Wellington, Ontario, Canada in 1901 and Toronto, York, Ontario, Canada in 1922. He registered for military service in 1915. In 1915, at the age of 21, his occupation is listed as bellboy in Toronto, York, Ontario, Canada. He died on 27 July 1954, in Toronto, Ontario, Canada, at the age of 60, and was buried in York Cemetery, Toronto, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 