Source: Per record of promotion for James William Mills, reg. no. 159148.
Family Search: When Sergeant Knox Mathew Garrett was born on 15 April 1898, in London, Ontario, Canada West, British Colonial America, his father, Alexander Garrett, was 55 and his mother, Sarah Knox, was 37. He married Elizabeth Edith Hodgins on 20 October 1920, in London, Ontario. He lived in Ontario, Canada in 1898 and London, Ontario, Canada for about 1 years. He registered for military service in 1915. In 1915, at the age of 17, his occupation is listed as student. He died on 19 March 1988, at the age of 89, and was buried in Woodland Cemetery, London, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 