Poss. HM George I's 14-Great Grandfather. Poss. U.S. President [GARFIELD]'s 18-Great Grandfather. PM Churchill's 21-Great Grandfather. Lady Diana's 23-Great Grandfather. Poss. PM Cameron's 22-Great Grandfather. Louis XVII's 17-Great Grandfather. HM Manuel II's 21-Great Grandfather. Poss. `Osawatomie' Brown's 19-Great Grandfather. Poss. Jamie's 21-Great Grandfather.