"England and Wales Census, 1891," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:H3QL-5PZ : 8 May 2019), Arthur E Potts in household of Thomas J Potts, Cowpen, Northumberland, England, United Kingdom; from "1891 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 12, Northumberland county, subdistrict, The National Archives of the UK, Kew, Surrey.