Anna Barbara Longstreet - Sussex, New Jersey

Hello,
I am looking for any documentation pertaining to Anna Barbara Summers, who was the widow of George Summers who died in Oxford, Sussex, New Jersey in 1785. All family trees I have seen say that Barbara's maiden name was LONGSTREET, but I am not convinced that is true. However, if she was not born a Longstreet, how did the Longstreet name get associated with Anna Barbara? My current theory is that she remarried to somebody named Longstreet after George died. I estimate she would have been about 62 years old when he died, which is, granted, late to have a second marriage, but who knows?

Also the fate of Anna Barbara has never been determined, and believe me, I've done some looking. I'd love to hear from anybody who has clues or suggestions on either of these topics regarding Anna Barbara.

Thx, Mary Ann