Robert Pennington married Rachel Benn,daughter of Henry Benn, one time resident of Appoqunimink Hundred, DE and later Centre Co, PA. Is he son of Stephen and Mary Pennington of Fredericktown, Cecil co, MD. Their son Robert, with his sister Ann, wife of Francis Murphy, is mentioned in the will of their mother: Bk 5, p 233-4, 13 Nov 1789-30 apr 1790.