The Japanese surnames etymology dictionary.
Iwate-ken Morioka-shi . Terrain . From the cliff in the south. Iwate-ken Morioka-shi Nakataya is headquartered. In the same place I will tell that Iwate-ken Kamihei-gun Ootsuchi-chou Yoshiyoshi was the descendant of Heike's fallen family and came to live. Estimated in the Kamakura period. 平 reference.