↑ "England and Wales Census, 1841," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M7QQ-Q4Q : 25 May 2019), William Collins, Potterspury, Northamptonshire, England, United Kingdom; from "1841 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO HO 107, The National Archives, Kew, Surrey.
↑ "England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SGTB-7GW : 12 September 2019), William Collins, Potterspury, Northamptonshire, England; citing Potterspury, Northamptonshire, England, p. 5, from "1851 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO HO 107, The National Archives of the UK, Kew, Surrey.