U.S. President's 15-Great Uncle. HRH Charles's 19-Great Uncle. Poss. PM Churchill's 19-Great Grandfather. Lady Diana's 19-Great Uncle. Poss. P.M. Cameron's 21-Great Grandfather. HRH Albert II's 20-Great Uncle.
The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing.