Poss. HM George I's 11-Great Grandmother. Poss. HRE Charles VI's 13-Great Grandmother. Poss. U.S. President [WASHINGTON]'s 17-Great Aunt. Poss. PM Churchill's 20-Great Grandmother. Poss. Lady Diana's 20-Great Grandmother. PM Cameron's 23-Great Half-Aunt. HM Margrethe II's 19-Great Half-Aunt. Wm. von Bismarck's 19-Great Half-Aunt. Poss. Jamie's 24-Great Aunt.