"England and Wales Census, 1881," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q27B-KP7Y : 12 December 2017), William O'Brien, Linthorpe, Yorkshire,Yorkshire North Riding, England; from "1881 England, Scotland and Wales Census," database and images, findmypast (http://www.findmypast.com : n.d.); citing p. 43, Piece/Folio 4854/25, The National Archives, Kew, Surrey; FHL microfilm 101,775,350.
"England and Wales Census, 1891," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:7R48-B2M : 12 December 2017), William Obrian, Linthorpe, Yorkshire, Yorkshire (North Riding), England; from "1891 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 12, Yorkshire, Yorkshire (North Riding) county, subdistrict, The National Archives of the UK, Kew, Surrey.
"England and Wales Census, 1901," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XSSW-V9Y : 8 April 2016), Mary Obrien in household of William Obrien, Middlesbrough, Yorkshire (North Riding), England; from "1901 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing Middlesbrough subdistrict, PRO RG 13, The National Archives, Kew, Surrey.
"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7PR-ZN1 : 3 August 2017), William O Brien, Middlesbrough, Middlesbrough, Yorkshire (North Riding), 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.
Is William your ancestor? Please don't go away! Login to collaborate or comment, or ask our community of genealogists a question.