Iwakouchi 【岩河内】2 The Japanese surnames etymology dictionary.
Kagoshima-ken , Kyouto-fu . Terrain . From the upper stage. Kagoshima-ken Kanoya-shi Distributed in Kushigaracho Kami-Ogara. Kagoshima-ken Kanoya-shi There was an upper gate of the gate division system in Edo era in Kusamaru cho Hosoyama. Kyouto-fu Nantan-shi Hiyoshi cho Tahara Toshiaki is an unknown place name in the record era. It is distributed in the same place.