Etymology and distribution of 小井川.

Koikawa 【小井川】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Kyouto-fu Ayabe-shi , Hokkaidou , Toyama-ken . Distribution including Sasaba.

① Kyouto-fu Ayabe-shi is based in Kuri-machi. The pronunciation is Sasaba.

② Ishikawa-ken Suzu-shi birth of Sasami-cho. A place name with a record since the Edo period. The place name was also written as "Shinami." Tell her that she came to Hokkaidou Oshimashi-chou Matsumae-chou from 1716 to 1736 (Kyoho year).

Oikawa 【小井川】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Oosaka-fu , Saga-ken , Kagoshima-ken . Distribution that also includes cogs.

① Saga-ken Tosu-shi Distributed in Tashiro-cho Town. Fukuoka-ken Asakura-shi Kosuma is a place name with a record since the Muromachi Period.

② Kagoshima-ken Kanoya-shi Originated from Oguma (Kokuma) in Shimo - cho's lower name. There was Kosuma gate of the gate division system in the Edo period in the same place.

Oigawa 【小井川】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Oosaka-fu Oosaka-shi Minato-ku. Last name including "back", name of male including "government".

Koigawa 【小井川】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Hyougo-ken Awaji-shi , Shiga-ken Nagahama-shi . Terrain . Hyougo-ken Awaji-shi From the land near the sea wave of Murozu. Shiga-ken Nagahama-shi From the land close to the waves of Lake Biwa in Minamihama Town. Kumamoto-ken Yatsushiro-shi In Toyocho Kita, tell Kumamoto-ken Yatsushiro-shi was engaged in agriculture at the fountain town. Estimated in the Edo period.