Mibu clan

Japanese: 壬生氏 - みぶうじ

A medieval local feudal lord in Shimotsuke. Based in Mibu, Tsuga District (present-day Mibu Town, Shimotsuga District, Tochigi Prefecture). Said to be a descendant of the ancient Mibu clan, which gave birth to Ennin, and also a branch of the Mibu clan, which served as a Kyoto official. The clan prospered for five generations from the 15th to 16th centuries, through Taneji, Tsunashige, Tsunafusa, Tsunao, and Yoshio. Taneji built Mibu Castle, Tsunashige advanced as far as Kanuma, and eventually built Kanuma Castle and moved there, planning to advance into Mount Nikko. Tsunafusa also served as the head of the Nikko Shrine Land Administration Office. After Tsunashige was killed in a clan feud, Yoshio sided with the Later Hojo during Toyotomi Hideyoshi's attack on Odawara in 1590 (Tensho 18), and the Mibu clan was wiped out.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

下野の中世土豪。都賀郡壬生(現，栃木県下都賀郡壬生町)を本拠とする。円仁（えんにん）を生んだ古代壬生氏の後裔とも，また京都官務家壬生家の庶流ともいわれる。15～16世紀に胤業，綱重，綱房，綱雄，義雄の5代にわたり繁栄。胤業が壬生城を築城，綱重は鹿沼まで進出，やがて鹿沼城を築いてここに移り日光山への進出を図った。綱房は日光山神領惣政所職ともなっている。綱雄が一族の内紛で殺されたのち，義雄が1590年(天正18)豊臣秀吉の小田原攻めで後北条方に属したため，壬生氏は族滅した。

出典　株式会社平凡社世界大百科事典第２版について　情報

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