There is a record of a Mary Tefft marrying William Clark. Is this her?
"Rhode Island Marriages, 1724-1916," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F8KT-N88 : 11 February 2018), William Clark and Mary Tefft, 20 Mar 1757; citing Richmond Twp,Washington,Rhode Island, reference ; FHL microfilm 930,852.
↑ Source: #S473 Page: Source number: 723.000; Source type: Electronic Database; Number of Pages: 1; Submitter Code: JAJ
Source: S182 Author: Godfrey Memorial Library, comp. Title: American Genealogical-Biographical Index (AGBI) Publication: Name: Online publication - Provo, UT, USA: The Generations Network, Inc., 1999.Original data - Godfrey Memorial Library. American Genealogical-Biographical Index. Middletown, CT, USA: Godfrey Memorial Library.Original data: Godfrey Memorial Library. American Gen; Repository: #R5
Source: S474 Title: Family Data Collection - Individual Records Publication: Name: Edmund West, comp.. Family Data Collection - Individual Records [database on-line]. Provo, UT, USA: Ancestry.com Operations Inc, 2000.; Repository: #R5
Source: S559 Author: Yates Publishing Title: U.S. and International Marriage Records, 1560-1900 Publication: Name: Ancestry.com Operations Inc; Location: Provo, UT, USA; Date: 2004; Repository: #R5
"Rhode Island Marriages, 1724-1916," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F8KT-F5J : 11 February 2018), John Tefft and Mary Reynolds, 11 Dec 1721; citing Richmond Twp,Washington,Rhode Island, reference ; FHL microfilm 930,852.
Reynolds-7567 was created by James Martin through the import of Martin Family_2015-06-12.ged on Jun 12, 2015.
It may be possible to confirm family relationships with Mary by comparing test results with other carriers of her mitochondrial DNA.
Mitochondrial DNA test-takers in the direct maternal line: