Etymology and distribution of 伊波川.

Ibagawa 【伊波川】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Hiroshima-ken . Hiroshima-ken Yamagata-gun Kitahiroshima-chou There is distribution in Kawato. Estimated from the top of the same Kumada surname. 熊田 Kumada reference. There is Kumagaya in the stamp of the same place.

※ Ibaraki-ken Chikusei-shi near ( Ibaraki-ken Sakuragawa-shi in the Makabe - gun) There was a case called Mr. Kamekuma who was in the Kamakura period in Kamakura period as "upper bear (Kamikuma)". It is unknown whether Kame bear exists. The place name was written as "Heikyo" during the Heian period and "Kamekuma" during the Kamakura period.