On July 19, the brother of Saiakira, and child of Hisamitu SIMAZU succeeded to a family, and Hisamitu became his guardian, but Noriaki, who was the father of Saiakira, held the real power in the domain.
7月19日、斉彬の弟島津久光の子島津忠義が家督相続し、久光が後見人となったが、藩の実権は斉彬の父斉興が握った。