Ikoma Kazumasa  Kazumasa was the eldest son of Ikoma Chikamasa. He fought with distinction under Oda Nobunaga, and then in Korea with Toyotomi Hideyoshi's forces. He sided with the Tokugawa at the Battle of Sekigahara, though his father sided with the forces of Ishida Mitsunari; as a result, the Ikoma family's fief was saved. His father yielded him headship in 1600. It was then that the fief's capital was moved from Marugame Castle to Takamatsu Castle. After Kazumasa's death in 1610, his son Masatoshi succeeded him.