Home province Shimōsa
Mutsu | Founder Yūki Tomomitsu | |
Parent house Ashikaga clan (Fujiwara) Cadet branches Shimōsa Yūki
Shirakawa Yūki | ||
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, Yūki-shi Hatto).
The Shirakawa branch was destroyed by Toyotomi Hideyoshi; but the Shimōsa branch survived as daimyo 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.