Source: 18th Battalion Nominal Roll, April 1915.
Find-A-Grave
Family Search: William Henry Wilson was born on 23 September 1891, in Wolverhampton, West Midlands, England, United Kingdom as the son of William Henry Wilson. He immigrated to Canada in 1913 and lived in Belleville, Hastings, Ontario, Canada in 1921. He registered for military service in 1914. In 1914, at the age of 23, his occupation is listed as gas stoker.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 