England and Wales Census, 1911," database, FamilySearch (
https://familysearch.org/ark:/61903/1:1:XWP9-LXC : 20 December 2018), Frederick Ferdinand Servais, St George In The East, Stepney E, London, England; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey.