Source: Per personal message from Allan Miller at Facebook.
Family Search: Private Lewis Willis was born on 21 May 1890, in London, England, United Kingdom as the son of Willis. He immigrated to Canada in 1913. He registered for military service in 1915. In 1915, at the age of 25, his occupation is listed as farmer in Ridgetown, Kent, Ontario, Canada. He died on 18 May 1970, in London, Ontario, Canada, at the age of 79, and was buried in Duart Cemetery, Duart, Chatham-Kent, Ontario, Canada.
British Home Child registered under the name of Louis. Same year of birth (1890).
History of the 18th Battalion CEF, "The Fighting Eighteenth" 