Chiba clan

The Chiba clan (千葉氏 Chiba-shi) was a branch family of the Kanmu Taira clan descended from Chiba Tsunetane, son of Taira no Tadatsune. The Chiba governed in Shimōsa Province, and the clan was based in present-day Chiba City. The clan additionally, for a period, the area that includes the Ise Grand Shrine. After the establishment of the Kamakura shogunate, the head of the Chiba clan became the hereditary shugo governor of Shimōsa Province.[1]

Chiba clan
千葉氏
Gessei, the mon of the Chiba clan
Home provinceShimōsa
Parent houseTaira clan
TitlesShugo
FounderChiba Tsunetane
Founding year12th century
Ruled until16th century
Cadet branchesSōma clan, Tō clan

Origin

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.[2] The Chiba, however, came to support Yoshitomo in the Hōgen Rebellion (1156).

Genpei War

During the Genpei War (1180–1185) the Chiba clan, as well as the Hōjō, Miura, and Doi clans, opposed the greater 'core' Taira clan and supported Minamoto no Yoritomo. Chiba Tsunetane, clan chief of the period, won Yoritomo’s trust and helped establish the Kamakura shogunate. The power of the clan increased in this period, but ultimately declined during the Muromachi period (1336–1573).

Later history

The Chiba clan was completely conquered by Toyotomi Hideyoshi before the establishment of the Tokugawa shogunate. Many descendants of the Chiba clan live in Chiba Prefecture today. Chiba Castle, reconstructed in 1967, is built on the site of Inohana Castle, a fortification of the clan.[3]

References
  1. Sansom, George (1958). A history of Japan to 1334. Stanford, Calif: Stanford University Press. ISBN 978-0-8047-0523-3.
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