HM George I's 14-Great Half-Uncle. Poss. HRE Charles VI's 15-Great Uncle. U.S. President's 19-Great Half-Uncle. PM Churchill's 21-Great Half-Uncle. Lady Diana's 21-Great Half-Uncle. P.M. Cameron's 23-Great Half-Uncle. Louis XVII's 16-Great Grandfather. HM Juan Carlos' 21-Great Grandfather. `Osawatomie' Brown's 20-Great Half-Uncle. Poss. Jamie's 22-Great Uncle.