- Born: 23 Aug 1766, Shrewsbury, Worcester, Massachusetts
- Marriage (1): Thaddeus Underwood
- Died: Westminster, Windham County, Vermont
per History of Marlboro, VT by Newton, Mary was of Boylston, MA. After the death of Thaddeus she went to live with her son Samuel in Westminster where she died.
Mary married Thaddeus Underwood, son of Jonathan Underwood and Hannah Richardson. (Thaddeus Underwood was born on 17 Sep 1758 in Suffield, CT and died on 8 Sep 1840 in Marlboro, Windham County, Vermont.)