↑ Connecticut Marriages, 1640-1939, database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:F7LW-XZ4 : 12 May 2016), John Tyler and Thankful Williams, 18 Feb 1773; citing Tolland, Tolland, Connecticut, United States, Connecticut State Library, Hartford.; FHL microfilm 1,376,026.
↑ "Connecticut Births and Christenings, 1649-1906," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F73J-JVK : 3 December 2014), Thankful Tyler in entry for John Tyler, 28 Aug 1780; citing Tolland, Tolland, Connecticut, United States; FHL microfilm 1,376,026.
It may be possible to confirm family relationships with Thankful by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Thankful: