Minamoto no Yoshimitsu was awarded Kai Province following the Gosannen War, and his great-grandson Nobuyoshi took the surname Takeda.

[2] Nanbu Mitsuyuki joined Minamoto no Yoritomo at the Battle of Ishibashiyama and served in various mid-level positions within the Kamakura shogunate and is mentioned several times in the Azuma Kagami.

He accompanied Yoritomo in the conquest of the Hiraizumi Fujiwara in 1189, and was awarded with vast estates in Nukanobu District the extreme northeast of Honshū, building Shōjujidate Castle.

Shichinohe was the location of a cadet branch of the Nanbu clan for several generations, and their fortified manor house was rebuilt extensively towards the end of the Sengoku period.

[3] However, in 1591 the Shichinohe-branch of the Nanbu clan opposed the forces of Toyotomi Hideyoshi during the Kunohe Rebellion and were defeated.