Hōgen Rebellion

The Hōgen Rebellion (保元の乱) was a Japanese civil war fought in 1156 over Japanese imperial succession and control of the Fujiwara clan of regents. However, it also succeeded in establishing the dominance of the samurai clans and eventually the first samurai-led government in the history of Japan. After the death of the cloistered Emperor Toba,  Emperor Go-Shirakawa and the retired Emperor Sutoku disputed over succession to the throne and continuation of the cloistered government. Sutoku and Go-Shirakawa were sons of Toba.  Fujiwara no Tadamichi, first son of regent Fujiwara no Tadazane, sided with Go-Shirakawa while his younger brother Fujiwara no Yorinaga sided with Sutoku. Each rival side in turn beckoned the Minamoto and Taira clans of samurai.  Minamoto no Tameyoshi, head of the Minamoto clan, and Taira no Tadamasa sided with Sutoku and Yorinaga while on the other hand Minamoto no Yoshitomo, first son of Minamoto no Tameyoshi, and Taira no Kiyomori, head of the Taira clan and nephew of Taira no Tadamasa, sided with Go-Shirakawa and Tadamichi.
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