Naganuma

The Naganuma were a warrior house of Shimotsuke and one of the eight Kanto yakata, tracing Fujiwara descent through the Oyama clan. Their founder Munemasa, second son of Oyama Masamitsu, followed Minamoto no Yoritomo and took his name from Naganuma in Haga district. He distinguished himself in the Jokyu war of 1221 and became shugo of Awaji.

The Nanboku-cho wars split the house when the heir Hidetada withdrew from its home estate to Mutsu. Yoshihide of the Mutsu line served the Kamakura kubo Ashikaga Ujimitsu and recovered Naganuma in 1399. A succession quarrel drew the family into the Eikyo and Yuki wars, and after 1454 the main line was reportedly destroyed or driven out during the Kyotoku war.

A branch served the Koga kubo and took the name Minagawa. Minagawa Hiroteru became an Edo daimyo, though his house died out without an heir.