The Japanese surnames etymology dictionary.
① There is a geographical name including "for". Oosaka-fu Oosaka-shi was in the Edo period. Chiba-ken Futtsu-shi Kokubo was in the clan office and was in Kokubo clan who existed from 1868 to 1871. It is distributed in the same place.
③ Topography . "Village" added because it is the first surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. Kagoshima-ken Ooshima-gun Isen-chou There is distribution in Konoshi. There was a surname in the same place in 1879. 為 reference.