Source: News clipping posted at 18th Battalion Facebook Group by a member.
Find-A-Grave
Family Search: Private John McKernan was born on 25 September 1893, in Belfast, Ireland as the son of John McKernan and Annie. He married Eva May Wells on 6 January 1921, in Dresden, Kent, Ontario, Canada. They were the parents of at least 1 son and 3 daughters. He lived in Windsor, Sandwich, Essex, Ontario, Canada in 1921 and Dresden, Kent, Ontario, Canada in 1934. He registered for military service in 1915. In 1924, at the age of 31, his occupation is listed as letter carrier, canada post in Windsor, Sandwich, Essex, Ontario, Canada. He died on 8 July 1971, in London, Ontario, Canada, at the age of 77.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 