Yūki clan (結城氏) is a Japanese samurai kin group.

History

The Yūki claim descent from Fujiwara no Hidesato. The clan is composed of two branches: the Shimōsa Yūki and the Shirakawa Yūki. The split happened during the Nanboku-chō period. One branch supported the Southern Imperial Court, and the other branch the Northern Pretenders. Like many samurai clans, the Yūki developed a code of provincial laws (bunkoku-hō). In 1556, Yūki Masakatsu published New Laws of the Yūki family (結城氏法度). The Shirakawa branch was destroyed by Toyotomi Hideyoshi; but the Shimōsa branch survived as daimyōs of Yūki Domain in Shimōsa Province. The Shimōsa Yūki became part of the Tokugawa clan. The main samurai vassals of the Yūki (Yūki shi-ten) included the Tagaya clan, the Mizutani clan, the Yamakawa clan and the Iwakami clan.

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