HM Juan Carlos' 12-Great Grandmother. Philippe of Belgium's 12-Great Grandmother. Grand Duke Henri's 12-Great Grandmother. HM Margrethe II's 12-Great Grandmother. HM Beatrix's 12-Great Grandmother. HM Carl XVI Gustaf's 12-Great Grandmother. HM Harald V's 11-Great Grandmother. Wm. von Bismarck's 9-Great Aunt.