Etymology and distribution of 河向.

Kawamukai 【河向】^{レベル3
About 200}  The Japanese surnames etymology dictionary.

Nagano-ken , Saitama-ken , Toukyou-to .

① Nagano-ken Shiojiri-shi Originated from Minami Kumai · Kitakumai, a small figure of Katakaoka. A place name with a record since the Kamakura period. Saitama-ken Hiki-gun Hatoyama-machi Kumai is a stopover. A place name with a record since the Edo period. There was Mr. Kumai in the same place.

② Kouchi-ken Hata-gun Kuroshio-chou Introduction from Kumai. A place name with a record since the Azuchi-Momoyama period.

※ Fukuoka-ken was in the Tamagawa-gun during the North and the North. Tell him that the descendant of Mr. Kumagai called "Kumae" and "Kumai" as well. 熊谷 Kumagai reference. 熊江 Kumae reference.