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.