It is not certain that her name was Mary Stanton.

From http://www.thesorensens.net/FamilyTree/gp475.htm#head1

It is possible that Mary was a descendant of, or relative of, Robert Stanton, our ancestor through the Tibbetts line (Henry Tibbetts was married to Sarah Stanton). Some online genealogies show Pasco's wife as a daughter of Robert & Avis, but I have not seen any documentation of this.

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U.S. and International Marriage Records, 1560-1900

about Pasco Whitford

Name: Pasco Whitford

Gender: male

Birth Place: RI

Birth Year: 1640

Spouse Name: Mary Stanton

Number Pages: 1 -------------------- •familycentral.net... ; familytreemaker... ; •Mary WHITFORD (MRS.) •Birth:1648, Kingston, Wash., R.I. •Death:Bef 3 Dec 1743 •Father:Joseph STAFFORD •Mother:Sarah HOLDEN

U.S. and International Marriage Records, 1560-1900

about Pasco Whitford

Name: Pasco Whitford

Gender: male

Birth Place: RI

Birth Year: 1640

Spouse Name: Mary Stanton