Source: Gathering Our Heroes
Find-A-Grave
Family Search: When Frederick William Mears was born on 14 February 1900, in Edmonton, London, England, United Kingdom, his father, John Henry Mears, was 33 and his mother, Mary Pethers, was 24. He married Winnifred Elsie Warner on 25 September 1920, in Sandwich, Essex, Ontario, Canada. He lived in Kent, Ontario, Canada in 1911 and Chatham, Chatham-Kent, Ontario, Canada for about 2 years. He registered for military service in 1916. In 1916, at the age of 16, his occupation is listed as printer.
Enlisted under age.
His brother, Private John Henry Mears (189381) also served with the 18th Battalion as a runner and was killed in action at Passchendaele on 11 November 1917.
His father, John Henry Rollo (Rotto) Mears also served. He was born circa 1866 so he was over age when he enlisted.
War Diary of the 18th Battalion CEF 