Mary was born before 1782. She passed away in 1858.
Sources
"Pennsylvania Births and Christenings, 1709-1950," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/V2F8-L36 : 11 February 2018), Magdalena Hollinger, 01 Apr 1782; Christening, citing WHITE OAKS LUTHERAN AND REFORMED CHURCH, PENN TWP, LANCASTER, PENNSYLVANIA; FHL microfilm 940,435.
"West Virginia Marriages, 1780-1970," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FBPZ-646 : 11 February 2018), Henry March and Mary Hollinger, 05 Apr 1800; citing Berkeley, West Virginia, 62, county clerks, West Virginia; FHL microfilm 831,315.
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