Source: Photo submission of headstone by The London Robinsons at the 18th Battalion Facebook Group.
Family Search: When Harry Brooke was born on 4 March 1897, in London, England, United Kingdom, his father, Daniel Dudley Brooke, was 34 and his mother, Fanny Whelen, was 26. He lived in London, Ontario, Canada West, British Colonial America in 1911. He registered for military service in 1916. In 1916, at the age of 19, his occupation is listed as candy maker in London, Ontario, Canada. He died on 18 August 1922, in London, Ontario, Canada, at the age of 25.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 