Judy, I did some further investigation and discovered the cousins connection is with the Coleman side of the family. Samuel Coleman married 4 times; the daughter of his first marriage, Deborah Coleman, married Nathan DeCou and had 5 children--one of whom, Samuel, married Martha Lippincott. Looks like Samuel and Martha settled in Moorestown. So that mystery is solved but doesn't get me any further on the Uncles side of things.
If you are at BHS I would be very grateful if you could look up the Friends Meeting burial ground records and see if you can find any dates for Samuel Coleman and Sarah Uncles, and his brother Nathaniel and wife Elizabeth Lippincott. I know Nathaniel and Elizabeth are there but I don't have any MI dates. The dates I have for Samuel HAVE to be wrong! And I have nothing for Sarah Uncles so any scrap of info would be very helpful. Many thanks!