Etymology and distribution of 岩井川.

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

Hokkaidou , Miyagi-ken , Aomori-ken . Originated from beefzaka of Fukushima-ken Fukushima-shi (formerly Nobuo-gun). Fukushima-ken Fukushima-shi Hiraishi Ushisaka is a place name unknown in the record era. Fukushima-ken Date-shi Lingyama Town Nakagawa (formerly known as Beezaka) is a place name with a notation of "Ushaka" in the Warring States Period. Miyagi-ken Sendai-shi Aoba-ku Kawauchi was in the Edo era in the Sendai Samurai of the Clan office.

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

Iwate-ken Hanamaki-shi , Kumamoto-ken Yamaga-shi .

① Personal name . Iwate - ken Hanamaki - shi In Tohmyo Nogami - Nishimiyano eye tell her that he gave a surname using the cattle of Ushiwakarumu which is a childhood name by lending an innocence to Genjikei of the warlord of the Heian period. Tell him that he was calling from the Heian period in the same place. 源 Minamoto reference.

② Topography . From the land sticking out with cows. Kumamoto-ken Yamaga-shi It was in the Edo era in Kikunaga cho Ueno Nogano. There are cases where the Ox means "North North East".