On 16 Apr 1697 Mary married Ephraim Pierce (22794) , son of Ephraim Peirce (10602) (ca 1647-29 Sep 1719) & Hannah Holbrook (8572) (ca 1648-18 Sep 1721), in Swansea, Bristol County, Massachusetts.191 Born ca Nov 1673 in Warwick, RI. Ephraim died in Glocester, RI on 28 Mar 1772.

Ephraim’s will, signed 29 Apr 1769, proved 15 May 1772, named daughters Elizabeth Eddy of Providence (widow), Ruth Brown wife of James of Swansea, and son Ephraim with wife Mary, also granddaughters Mary Thomas and Desire Pierce (R.I. Probate-Gloucester, Vol. 1, page 363).