Source: Via Folkestone news article about a baseball game via Andrew Taylor from the 18th Battalion Facebook Group.
Family Search: When William Charles Marks was born on 24 June 1887, in Stratford, Perth, Ontario, Canada, his father, William Joseph Marks, was 21 and his mother, Catharine Elizabeth Jane McIntosh, was 17. He married Isabel Ezibala Sale on 24 June 1922, in York, Ontario, Canada. They were the parents of at least 3 sons and 1 daughter. He registered for military service in 1914. In 1914, at the age of 27, his occupation is listed as machinist. He died on 9 February 1951, in his hometown, at the age of 63, and was buried in Avondale Cemetery, Stratford, Perth, Ontario, Canada
History of the 18th Battalion CEF, "The Fighting Eighteenth" 