Nanbu clan
The Nanbu clan was a branch of the Seiwa Genji originally from Kai Province, who settled in what is now the town of Nanbu, Aomori after the conquest of the Hiraizumi Fujiwara by Minamoto no Yoritomo. Along with the Shimazu clan of Satsuma Province, the Nanbu clan has the distinction of being one of the two clans which held onto their territories for over 700 years, from the Kamakura period to the Meiji Restoration.