Perhaps you have run across records about a Deborah Wilmarth who married a Noah Brown about 1760. One daughter, Hannah Brown was born 29 April 1770 in Attleboro, MA but moved with her older brother to the Boston area when her father Noah Brown died in May of 1776. Did Deborah Wilmarth Brown move with them after she was widowed? Who are the parents and siblings of this Deborah Wilmarth? Is she a sister to your John Wilmarth?