Source: Per Roll of Honour in Duty Nobly Done. Found during a cross-check of the database.
Family Search: When Private Edgar Harrison Jackson was born on 20 January 1888, in Petrolia, Lambton, Ontario, Canada, his father, George William Jackson, was 34 and his mother, Mary Martha Harrison, was 30. He lived in Lambton, Ontario, Canada in 1901. He registered for military service in 1915. In 1915, at the age of 27, his occupation is listed as refiner. He died on 12 November 1921, in Petrolia, Lambton, Ontario, Canada, at the age of 33, and was buried in Hillsdale Cemetery, Petrolia, Lambton, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 