Source: May 1918 casualty.
Family Search: Private Allan Yuill was born on 22 October 1882, in Glasgow Green, Glasgow, Scotland, United Kingdom. He immigrated to Canada in 1913. He registered for military service in 1915. In 1915, at the age of 33, his occupation is listed as fireman. He died on 10 May 1918, in Port Arthur, Thunder Bay, Ontario, Canada, at the age of 35, and was buried in Mountain View Cemetery, Thunder Bay, Thunder Bay, Ontario, Canada.
History of the 18th Battalion CEF, "The Fighting Eighteenth" 