Source: Per post by member of 18th Battalion Facebook Group. This man enlisted and then deserted from the 18th, later to join CEF and served in England with the Canadian Ordinance Corps.
Find-A-Grave
Family Search: Private John Charles Peacock was born on 16 December 1879, in Derby, Derbyshire, England, United Kingdom. He immigrated to Canada in 1913 and lived in Woodstock, Oxford, Ontario, Canada in 1914 and Brandon, Manitoba, Canada in 1922. He registered for military service in 1914. In 1914, at the age of 35, his occupation is listed as painter in Woodstock, Oxford, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 