Eikyō Rebellion

Timeline

1. 1429Kyoto · KyotoAshikaga Yoshinori succeeded his brother Ashikaga Yoshinichi as sixth shogun of the Muromachi shogunate, and the era was renamed Eikyō. Yoshinori strengthened central authority, and friction with the Kantō's Kantō Kubō Ashikaga Mochiuji over appointments and land control increased, straining relations.
2. 1430–1438Kantō · KantōYoshinori and Mochiuji repeatedly clashed over Kantō appointments and management of imperial estates; envoys shuttled back and forth but could not bridge the divide. Powerful Kantō daimyō such as the Uesugi clan maneuvered between shogunate and Kubō as the stalemate gradually moved toward rupture.
3. 1439Kamakura · KamakuraYoshinori secretly ordered Mochiuji's suppression; Mochiuji refused the order, rose in arms, and held Kamakura against the shogunate. The shogunate ordered Uesugi Norizane, Imagawa Noritada, and others to lead Kantō forces against the Kantō Kubō, and the fighting quickly escalated.
4. 1439Kamakura · KamakuraShogunal forces breached Kamakura; Mochiuji was defeated and took his own life, and his sons Haruō and An'ō were also executed. The Kantō Kubō's status as an independent Kantō political center ended, the shogunate re-established control over Kantō, laying the groundwork for the later Uesugi kanrei system.