	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, Rose Kingdom, Rey de Oro, Apapane and Duramente. Leontes' dam Cesario was a top-class racemare won the Yushun Himba and the American Oaks and went on to produce the Japan Cup winner Epiphaneia. She was a fourth-generation descendant of the Epsom Oaks winner Pia. As a fourth-generation descendant of the Epsom Oaks winner Pia, Cesario was related to other major winners, including Chief Singer and Pleasantly Perfect.