Chiba clan
The Chiba clan descends from the Emperor Kanmu through the sequence of Imperial Prince Kazurahara (786-853) — Prince Takami — Taira no Takamochi — Taira no Yoshifumi — Taira no Tadayori — Taira no Tadatsune — Taira no Tsunemasa — Taira no Tsunenaga — Taira no Tsunekane — Chiba Tsuneshige — Chiba Tsunetane. The Emperor Go-Daigo authorized the head of Chiba family, Chiba Sadatane, as chief "daimyō" and samurai of the Kantō region. The clan settled in the Shimōsa area in the early 12th century. The Chiba came into conflict with Minamoto no Yoshitomo during the 1140s over estates in present-day Chiba Prefecture. The Chiba, however, came to support Yoshitomo in the Hōgen Rebellion (1156).