"England and Wales Census, 1841," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M77X-X8K : 25 May 2019), Mary Brewer in household of William Brewer, Crickhowell, Breconshire, Wales, 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:SGCN-1M7 : 8 November 2019), Mary Brewer in household of William Brewer, Llangattock, Breconshire, Wales; citing Llangattock, Breconshire, Wales, p. 23, 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.
"England and Wales Marriage Registration Index, 1837-2005," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2DS6-JD2 : 13 December 2014), Mary Ann Brewer, 1854; from "England & Wales Marriages, 1837-2005," database, findmypast (http://www.findmypast.com : 2012); citing 1854, quarter 1, vol. 11B, p. 184, Crickhowell, Brecknockshire, Wales, General Register Office, Southport, England.