O.K., I don't know if there is a connection or not, but I have a Joseph Dunham born abt. 1754: State not given . He had at least one son by the name of Moses,(Born 1776 in N.J.) who was the father of my G. Great Grandmother (Phebe Dunham B. 12 April 1811) . Since Moses was born in N.J. his father may have been also.
I obtained this information from Familysearch.com. I have just begun to do research on my "Dunham" line, so I have little to share at this time.