Xu Wen
Some historians consider Wu to have begun in 902, when Yang Xingmi was named Prince of Wu by the Tang dynasty. All three rulers of Wu after 907 (when the Tang dynasty collapsed) were Yang Xingmi's sons. The first ruler Yang Wo was murdered by Xu Wen and Zhang Hao, and his two brothers after him were effectively puppets dominated by Xu Wen at first, and later Xu Wen's adopted son Xu Zhigao (Li Bian) who in 937 usurped power to establish Southern Tang. Yang Pu, the last ruler, was the only one to claim the title of Emperor; the other rulers were kings or princes.