Etymology and distribution of 一向.

Ikkou 【一向】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Aichi-ken , Oosaka-fu , Hiroshima-ken . Aichi-ken Nishio-shi Originated in Imagawa-cho. Place name with a record since the North / South morning era. Toukyou-to Suginami-ku Imagawa is a stopover. It was a place name established in 1932 as a town name of Imagawa Town because it was the real estate of Imagawa during the Edo period. Fukuoka-ken Chikujou-gun Chikujou-machi Distributed in Iwamaru. There is now Kawahara (Imakawara) in the small story of the same place.