Poss. HM George I's 19-Great Grandfather. Poss. HRE Charles VI's 20-Great Grandfather. Poss. U.S. President [WASHINGTON]'s 23-Great Grandfather. Poss. PM Churchill's 27-Great Grandfather. Poss. Lady Diana's 26-Great Grandfather. Poss. HRH Albert II's 26-Great Grandfather. Poss. Jamie's 30-Great Grandfather.