HM Juan Carlos' 14-Great Aunt. Philippe of Belgium's 14-Great Aunt. Grand Duke Henri's 14-Great Aunt. HM Margrethe II's 13-Great Aunt. HM Beatrix's 13-Great Aunt. HM Constantine II's 14-Great Aunt. HM Carl XVI Gustaf's 14-Great Aunt. HM Harald V's 13-Great Aunt. `Red Baron' Richthofen's 12-Great Grandmother.