Mary Pennybacker and William Williams

I'm looking for information on Mary Pennybacker (~1760) and William Williams (~1757) They were the parents of Mary Williams who married Carlyle Haynes.I'm especially interested in the parents/ancestors of Mary Pennybacker.Some sources say that her parents were Dirck Pennybacker and Hannah DeHaven, but I can't find very strong evidence of that.I've really appreciate any help/leads.Thanks, Dave