There is a John Grady, son of Frederick Grady and Nancy Kornagay. The family moved to Kentucky between 1830 and 1835. His parents married Jan 5, 1802 the year of John's birth so perhaps they are the parents of your John Grady. Brothers and sisters of John Grady: William; Henry; Lewis; Elizabeth; Mary; Nancy; Zilpha; Hester. Source of information came from John Grady of Dobbs and Duplin the famous Grady books that almost all Grady researchers use. I am decended from a brother of Frederick Grady, the father of John Grady.