Mary was born about 1849. She is the daughter of Unknown Lambert.
Sources
"England and Wales Census, 1851," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:SP9H-3PW : 12 September 2019), Mary Jane Lambert in household of Charles Lambert, , Yorkshire,Yorkshire (West Riding), England; citing , Yorkshire,Yorkshire (West Riding), England, p. 25, 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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