Well after months of research I FINALLY! found Mary Brigham of Moultonboro N.H. parents,
Asa,Brigham b. 2 Dec, 1721 d. Nov 61777 son of David Brigham and Mary Leonard.
Mary Newton b. 1725d. Dec 17 1795 daughter of Josiah Newton and Elizabeth Wood.
She was born in Marlboro, Mass. However, records only reflect New Hampshire. The only way I could backtrack this was her first marriage to Jonathan Quimby who died in 1775. she would re-marry my 6th Great Grandfather James Jackson of Hartford Conn. on March 8th of 1777 they both died and are buried in Eaton N.H. Hope this helps those searching.