Etymology and distribution of 河許.

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

Kouchi-ken , Yamaguchi-ken Shuunan-shi , Oosaka-fu .

① Kouchi-ken Kouchi-shi Originated from the vicinity of Sakai-cho (formerly Kunisawa name). Place name with a record since the North / South morning era. Kouchi-ken Kouchi-shi The wetland located in the southeast of Kochi Castle in Marunouchi was called Kunisawa. Good neighbor . Kouchi-ken Kouchi-shi is based in Harunoka cho, Hirooka - machi.

② Topography . "Sawa" was added to the country which is the surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 国 Kuni reference.