Etymology and distribution of 渡井本.

Toimoto 【渡井本】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Tochigi-ken Tochigi-shi , Oosaka-fu , Toukyou-to .

① Chiba-ken Katori-shi birth from Hatoyama. A place name with a record since the Edo period. Tochigi-ken Shimotsuga-gun Mibu-machi Honmaru was in the Edo period in the Mibu Sister of the Clan office.

② Korean type . Same source. It was in the creation of Mr. Creation Mr. Mr. Creator who was afraid of Ikuro Hatoyama, a politician in the Tokyo era. There is a record of naturalization on Osaka-fu Suita-shi on June 7, 1954. Choi is the real name. 崔 Sai reference.