I have a John Cormack b. abt. 1771 in NC, d. bef sep 1833 in Henry county, TN.His parents were William Cormack and Polly last name unknown.Also a brother William b. 1785 NC d. aft. 1860 in Henry county, TN and his wife Sarah Green b. 1791 NC, b aft 1860 Henry Co.,TN.Siblings scattered in Illinois and Iowa.Good Luck.