Poss. Lady Diana's 14-Great Uncle. HM Juan Carlos' 14-Great Uncle. Philippe of Belgium's 14-Great Uncle. Grand Duke Henri's 14-Great Uncle. HM Margrethe II's 14-Great Uncle. HM Beatrix's 13-Great Uncle. HM Carl XVI Gustaf's 14-Great Uncle. HM Harald V's 13-Great Uncle. Wm. von Bismarck's 9-Great Uncle. `Red Baron' Richthofen's 11-Great Uncle.