↑ "United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MC11-571 : 12 April 2016), Abm Vandermark, Marbletown, Ulster, New York, United States; citing family 183, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).
↑ "New York State Census, 1855," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K679-5N9 : 13 March 2018), Abraham L Van Dermark, E.D. 3, Marbletown, Ulster, New York, United States; citing p. , line #38, family #68, county clerk offices, New York; FHL microfilm 842,646.
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DNA Connections
It may be possible to confirm family relationships with Sarah by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.