Poss. HM George I's 12-Great Aunt. Poss. HRE Charles VI's 14-Great Aunt. Poss. U.S. President [WASHINGTON]'s 17-Great Aunt. HRH Charles's 24-Great Grandmother. Poss. Lady Diana's 21-Great Aunt. HM Juan Carlos' 24-Great Grandmother. HM Beatrix's 20-Great Grandmother. Wm. von Bismarck's 17-Great Aunt. Poss. Jamie's 24-Great Aunt.