 After Nobuhide died in 1551, his son Oda Nobunaga was initially unable to assume control of the entire clan.Nobuhide’s younger brother Oda Nobutomo, with the support of Shiba Yoshimune, took over Kiyosu Castle in 1553.After Yoshimune revealed to Nobunaga an assassination plot in 1554, Nobutomo had Yoshimune put to death.