Mary was born about 1822. She passed away after 1857.
"England, Cheshire Bishop's Transcripts, 1598-1900," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:NH8C-L9R : 10 December 2017), Mary Blackburn, 20 Jul 1822, Christening; citing item 1 p 122, St,Oswald's, Chester, Cheshire, England, Record Office, Chester; FHL microfilm 1,655,592.
https://familysearch.org/ark:/61903/1:1:FQG3-1YH "England, Cheshire Parish Registers, 1538-2000," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FQG3-1YH : 7 December 2017), Thomas Crimes and Mary Blackburn, 07 Nov 1843, Marriage; citing item 5 p 18, St Mary, Chester, Cheshire, England, Record Office, Chester; FHL microfilm 2,045,843.
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