The Phoebe Pettengill you describe as having married Benjamin Brown was born in North Yarmouth, Maine, December 31, 1789, according to A Pettingell Genealogy (APG). She was the daughter of Ebenezer(APG #169) and Esther (Barker) Pettengill, who were married at Lewiston in October, 1782. APG lists Ebenezer's ancestry back to Richard (the route is: Mark, Abraham, Matthew, Matthew, Richard), who emigrated to N. America sometime around 1640. My line meets hers with Elisha, Mark's brother in the sequence above. I have some acquaintance with the Yarmouth/Falmouth line of Pettengills, and know of a burying ground in Falmouth that contains some (but forget which ones at this remove!).