Source: 18th Battalion Nominal Roll, April 1915.
Find-A-Grave
Family Search: William Henry Sargeant was born on 22 May 1874, in London, England, United Kingdom as the son of John Sargeant. He married Annie Grosvenor on 24 December 1893, in Burslem, Staffordshire, England, United Kingdom. He lived in Kitchener, Waterloo, Ontario, Canada in 1917 and Guelph, Wellington, Ontario, Canada in 1918. He registered for military service in 1914. In 1914, at the age of 40, his occupation is listed as labourer in Berlin, Waterloo, Ontario, Canada.
Note that Nominal Roll has his last name spelled “Sargeant”.
War Diary of the 18th Battalion CEF 