優駿牝馬
Rose Kingdom is a dark bay or brown horse with a small white star standing 1.63 metres bred in Japan by Northern Farm. His sire, King Kamehameha was one of the best Japanese colts of his generation, beating a field including Heart's Cry and Daiwa Major in the 2004 Japanese Derby. His other winners as a breeding stallion include Lord Kanaloa, Lovely Day, Belshazzar (Japan Cup Dirt), Rulership (Queen Elizabeth II Cup) and Apapane. Rose Kingdom's dam Rosebud won three races including the Grade II Fillies' Revue and finished second in the Oka Sho, Yushun Himba and Queen Elizabeth II Commemorative Cup. She was a descendant of the Poule d'Essai des Pouliches winner Riverqueen.