I show a Mary Martha PEACOCK in my database, born aft 1780 d abt 1840, Barnwell co., S.C. daughter of Abraham & Mary Peacock, son of Samuel II Peacock, Johnston Co., NC. But I show her married to a Benjamin GRUBBS. One of her brothers, Samuel, moved to o Bulloch Co., Ga. bef. 1793. Don't know if there is a connection here. There's that Wiley name again.