Source: April 1917 casualty.
Family Search: Private Thomas McKenzie Mitchell was born on 5 October 1878, in Aberdeen, Aberdeenshire, Scotland, United Kingdom as the son of James Mitchell and Isabella Mitchell. He immigrated to Canada in 1913 and lived in Hamilton, Wentworth, Ontario, Canada in 1916. He registered for military service in 1916. In 1916, at the age of 38, his occupation is listed as labourer in Hamilton, Hamilton-Wentworth, Ontario, Canada. He died on 9 April 1917, in Thélus, Pas-de-Calais, France, at the age of 38, and was buried in Nine Elms Military Cemetery, Thélus, Pas-de-Calais, France.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 