"England Births and Christenings, 1538-1975," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NX2T-LQ9 : 30 December 2014), Robert Nichols, 09 Jan 1842; citing Norfolk, England, reference item 6; FHL microfilm 1,526,555.
Census
"England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SG67-GJH : 24 July 2016), Robt Nichols in household of Mark Nichols, Martham, Norfolk, England; citing Martham, Norfolk, England, p. 21, 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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