Saemoto 【塞本】2 The Japanese surnames etymology dictionary.
① Gunma-ken Agatsuma-gun Nakanojou-machi Originated from Shibamoto, a small figure of Nishi Nakanojo. Nagano-ken Nakano-shi Mitsuwa Okuma is based. I tell him that he came from Gunma-ken Agatsuma-gun, Shibamoto in the Sengoku period.
③ things . From the lawn (shiba). Chiba-ken Awa-gun Kyonan-machi In Longsushima, tell her that she brought a drink instead of tea to Yoritomo, a warrior of the Heian period and the Kamakura period, who landed there.