Zhang Zuo
In 356, the violent and capricious Zhang Zuo was overthrown and killed by the generals Zhang Guan and Song Hun. Initially, Song had Zhang Xuanjing claim the Jin-created title of Duke of Xiping, a title that his ancestors had carried for generations, but Zhang Guan overruled Song and had the young ruler claim the title Prince of Liang, a title that Jin had declined to grant previously. Zhang Guan served as regent.