The Japanese surnames etymology dictionary.
Oosaka-fu , Hyougo-ken , Nara-ken . 坂本 's variant. Gunma-ken Tomioka-shi Tomioka tells that it changed from Sakamoto surname in the Edo period. Shimane-ken Izumo-shi In the small moon of the Yamaguchi-ken Shimonoseki-shi , it is said that Shiga-ken 's Sakamoto is out. Good neighbor . Nara - ken Kitakatsuragi - gun Kanmaki - chou Kamaki is based.