"England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SGDQ-R9K : 8 November 2019), William Bertenshaw in household of Joseph Bertenshaw, Denton, Lancashire, England; citing Denton, Lancashire, England, p. 17, 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.
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