Source: Court martial database, confirmed.
Find-A-Grave
Family Search: Private John Wilkie was born on 29 December 1894, in Forfar, Angus, Scotland, United Kingdom as the son of Mary Wilkie. He immigrated to Canada in 1913 and lived in Sarnia, Kent, Ontario, Canada in 1924. He registered for military service in 1914. In 1914, at the age of 20, his occupation is listed as labourer. He died on 2 March 1966, in South River, Parry Sound, Ontario, Canada, at the age of 71.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 