HRH Charles's 14-Great Half-Uncle. Philippe of Belgium's 15-Great Half-Uncle. Grand Duke Henri's 15-Great Half-Uncle. HM Margrethe II's 14-Great Half-Uncle. HM Constantine II's 14-Great Half-Uncle. HM Carl XVI Gustaf's 14-Great Half-Uncle. HM Harald V's 14-Great Half-Uncle. HRH Catharina-Amalia's 17-Great Grandfather.