Source: May 1916 casualty.
Family Search: Private William Clark was born on 14 September 1896, in Moshers Corner, Annapolis, Nova Scotia, Canada as the son of William H. Clark. He registered for military service in 1915. In 1915, at the age of 19, his occupation is listed as mill worker. He died on 14 May 1916, in Ieper, West Flanders, Belgium, at the age of 19, an
History of the 18th Battalion CEF, "The Fighting Eighteenth" 