Ōtomo Sōrin
In 1551, Sue Harukata revolted against his lord Ōuchi Yoshitaka in the Tainei-ji incident, forcing him to commit seppuku. Sue installed the next lord of the clan, Ōuchi Yoshinaga (younger brother of Ōtomo Sōrin), but effectively led the Ōuchi family and its armies, intent on military expansion.