HRH Charles's 16-Great Aunt. HM Juan Carlos' 17-Great Aunt. Philippe of Belgium's 17-Great Aunt. HM Manuel II's 15-Great Aunt. Grand Duke Henri's 16-Great Aunt. HM Margrethe II's 16-Great Aunt. HM Beatrix's 12-Great Aunt. Ksr Wilhelm II's 14-Great Aunt. HM Umberto II's 15-Great Aunt. Wm. von Bismarck's 12-Great Aunt.