"England and Wales Census, 1841," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MQR3-FBW : 30 October 2015), William Gillions in household of William Gillions, Northill, Bedfordshire, England; 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:SGCW-GND : 24 July 2016), William Gillions in household of William Gillions, Northill, Bedfordshire, England; citing Northill, Bedfordshire, 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.