JOHN CALDWELL CALHOUN, b. March 18, 1782; d. March 31, 1850, was a son of PATRICK CALHOUN and MARTHA CALDWELL. MARTHA is a descendant of a JOHN CALDWELL who migrated from Ireland in 1727, and founder of the Cub Creek CALDWELL's. JOHN's had a brother, ANDREW CALDWELL, b. either 1692 or 1693, in Ballyboogan, Ireland, and migrated to Lancaster County, PA about 1717. After MARTHA’s death, PATRICK married a sister of RACHEL CRAIGHEAD. RACHEL was the wife of Rev. DAVID CALDWELL