In 1441, when Mitsusuke AKAMATSU organized a feast celebrating the victory in the Yuki War, Mochiyo attended with Yoshinori, but was gravely injured in the Kakitsu War which took place at this time and died of his wounds on July 28.
1441年、赤松満祐が結城合戦の戦勝祝いにと祝宴を開いたとき、持世も義教に従って臨席していたが、このときの嘉吉の乱で重傷を負い、それがもとで7月28日に死去してしまった。