Mary was born about 1700. She passed away in 1779.
The Church of Jesus Christ of Latter-day Saints, "Ancestral File," database, FamilySearch (https://familysearch.org/ark:/61903/2:1:MZVP-WS6 : accessed 23 August 2019), entry for Mary (LF0R-T0); submitted by kcmkay1815090 [identity withheld for privacy].
The Church of Jesus Christ of Latter-day Saints, "International Genealogical Index (IGI)," database, FamilySearch (https://familysearch.org/ark:/61903/2:1:9KBB-XS7 : accessed 23 August 2019), entry for Mary Briston; submitted by rashton99426 [identity withheld for privacy]; no source information is available.
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Featured National Park champion connections: Mary is 20 degrees from Theodore Roosevelt, 24 degrees from Stephanus Johannes Paulus Kruger, 19 degrees from George Catlin, 18 degrees from Marjory Douglas, 23 degrees from Sueko Embrey, 19 degrees from George Grinnell, 31 degrees from Anton Kröller, 21 degrees from Stephen Mather, 19 degrees from Kara McKean, 21 degrees from John Muir, 22 degrees from Victoria Hanover and 27 degrees from Charles Young on our single family tree. Login to find your connection.