HM George I's 12-Great Aunt. HRE Charles VI's 14-Great Aunt. U.S. President [MONROE]'s 20-Great Aunt. HRH Charles's 21-Great Grandmother. PM Churchill's 22-Great Aunt. Lady Diana's 22-Great Aunt. Louis XVII's 17-Great Grandmother. HM Manuel II's 21-Great Grandmother. Poss. Jamie's 24-Great Aunt.