"Canada Census, 1871," database, FamilySearch (https://www.familysearch.org/ark:/61903/1:1:M4QK-2XK : 19 March 2021), Mary Ann Sullivan in household of Danial Sullivan, Sandwich, Essex, Ontario, Canada; citing 1871; citing National Archives of Canada, Ottawa, Ontario.
"Canada Census, 1881," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:2:MN15-WXS : 2 March 2021), Household of Mary O'Sullivan, Sandwich East Township, Essex, Ontario, Canada; from "1881 Canadian Census." Database with images. Ancestry. (www.ancestry.com : 2008); citing Mary O'Sullivan, citing Library and Archives Canada, Ottawa, Ontario.
Find a Grave, database and images (https://www.findagrave.com/memorial/133533585/mary-anne-sullivan : accessed 30 January 2022), memorial page for Mary Anne McCarthy Sullivan (2 Feb 1828–Oct 1920), Find a Grave Memorial ID 133533585, citing Saint Mary's Roman Catholic Cemetery, Maidstone, Essex County, Ontario, Canada ; Maintained by A Shepherd (contributor 47739883) .
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