very interesting reading! a question for you... and i might be grasping at straws, but i have been stuck looking for a Lawrence Bourne in Attleboro in the late 1700's (would be my g-g-g-g-grandfahter ). He married Mary Reed. Mary's parents were (father) Reed and Mary Wilmarth, of Attleboro.
Might you have any clues to this Mary Reed? Sorry i do not have much more than this to go on.