HM George I's 12-Great Grandfather. HRE Charles VI's 13-Great Grandfather. Poss. U.S. President [WASHINGTON]'s 17-Great Grandfather. PM Churchill's 22-Great Grandfather. Lady Diana's 22-Great Grandfather. PM Cameron's 20-Great Grandfather. HRH Albert II's 21-Great Grandfather. HM Margrethe II's 18-Great Grandfather. Wm. von Bismarck's 15-Great Grandfather. Poss. Jamie's 24-Great Grandfather.