Poss. HM George I's 15-Great Grandfather. Poss. U.S. President [GARFIELD]'s 19-Great Grandfather. PM Churchill's 22-Great Grandfather. Lady Diana's 24-Great Grandfather. Poss. PM Cameron's 23-Great Grandfather. Louis XVII's 18-Great Grandfather. Poss. `Osawatomie' Brown's 20-Great Grandfather. Poss. Jamie's 22-Great Grandfather.