Etymology and distribution of 井清.

Isei 【井清】^{レベル3
About 80}  The Japanese surnames etymology dictionary.

Gifu-ken Nakatsugawa-shi . Originating from Niigata-ken Itoigawa-shi . Place name with a record since the North / South morning era. There is a place where it is said that the place name was developed by Mr. Itoi and it was called "Itoi-so". 糸井 Itoi reference. Gifu-ken Nakatsugawa-shi Takayama tells that it was called Itoigawa surname in 1469 to 1487 (civilized year). Gifu-ken Nakatsugawa -shi Estimated from tradition in the Nakatsugawa river in the late Heian and early Kamakura period. Gifu-ken Nakatsugawa-shi Saplings were in the Edo period. Gifu - ken Nakatsugawa - shi Komaba, Gifu - ken Nakatsugawa - shi Sakashita says that it changed from Itoigawa 's surname at Meiji New surname.

Ise 【井清】^{レベル3
About 80}  The Japanese surnames etymology dictionary.

Kyouto-fu , Gunma-ken , Tochigi-ken .

Birth of Niigata-ken Itoigawa-shi . A place name with a record since the Muromachi period. Tochigi - ken Haga - gun Ichikai - machi In Sasabara, I will tell you from Niigata - ken 's Itoi.

② Hiroshima-ken Miyoshi-shi Origin of Itoi-cho. A place name with a record since the Edo period. Tell the story that Mr. Itoi resided in the Sengoku period.

※ Shilla series . Hyougo-ken Asago-shi Originated from the Itoigawa River that flows through Wadayama Town. In Nara-ken there was Saiii (Itoi)'s surname in the Heian period. It is unknown whether the notation of "Suui" exists.

※ Fukushima-ken Fukushima-shi There was a record in 1171 (Rev. 1 year) at Tizen-ji Tema .