BARBARA PENNYPACKER TYSON, Penna. 1700s

Can anyone provide information regarding the parentage/ancestry of Barbara Pennypacker of Montgomery Co. (and York Co.?) PA, born about 1720, who married Cornelius Tyson on March 30, 1738?Her mother's maiden name was perhaps Umstead.Barbara had a brother named Jacob Pennypacker.Thanks for any help you can give!