Etymology and distribution of 貝井.

Kaii 【貝井】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Mie-ken Iga-shi . There is 加登 surname.

Kai 【貝井】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Shizuoka-ken , Fukui-ken , Nagano-ken . There is a surname including "Katsura". Shizuoka-ken Hamamatsu-shi Tenryu-ku In Mikubo-cho Okuya tells that he was engaged in agriculture and forestry. Estimated in the Edo period. Nagano-ken Nakano-shi It was in the Tokyo era as a monk of Koryishira of Jodo sect in Shinpo.

※ Korean type . A variant of 慶本 . There is a record of naturalization on Oosaka-fu Higashioosaka-shi on July 14, 1970. There is also "Keihon". Estimated pronunciation is Keimoto. Choi is the real name. 崔 Sai reference. 慶本 Keimoto reference.