Etymology and distribution of 洪谷.

Koutani 【洪谷】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Oosaka-fu · Tokushima-ken . 左農 There surname.

※ Korean type . Personal name . "Farm" is used from Shinnon (Sinnon, Korea Sound: Shinon) which is the Emperor of the Legend of the Legend of Shina who conveys it as Mr. Kang's founder. Kanagawa-ken There is a record of naturalization on January 13, 1964 in Yokosuka-shi . The real name is Kang. 姜 Kyou reference. Hyougo-ken Koube-shi There was a record of naturalization on January 12, 1974 in Tarumi-ku. The real name is money. 金 Kon reference.