Source: 153rd Battalion web site, 30th Regiment.
Family Search: When John Ira Campbell was born on 8 August 1897, in Cotswold, Minto, Wellington, Ontario, Canada, his father, John Campbell, was 32 and his mother, Sarah Ellen Bolton, was 27. He married Madeline Jeannette Murphy on 10 January 1923, in Mount Forest, Wellington North, Wellington, Ontario, Canada. They were the parents of at least 1 son and 1 daughter. He lived in Wellington, Ontario, Canada for about 10 years and Mount Forest, Grey, Ontario, Canada in 1915. He registered for military service in 1915. In 1915, at the age of 18, his occupation is listed as mechanic in Mount Forest, Grey, Ontario, Canada. He died on 28 December 1931, in Rochester, Monroe, New York, United States, at the age of 34, and was buried in Mount Forest Cemetery, Southgate, Grey, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 