Etymology and distribution of 研川.

Togikawa 【研川】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Aomori-ken Kamikita-gun Shichinohe-machi , Hokkaidou .

① Aomori-ken Kamikita-gun Shichinohe-machi birth flower pine tree forest root. It is based in the same place. Aomori-ken Kamikita-gun Shichinohe-machi Shichinohe was in the Edo era in the Shitenno Samurai of the Clan office.

② things . Shizuoka-ken Hamamatsu-shi Tenryu-ku In Sakuma-cho Urakawa tell me that Meiji New Last name by flower and pine.

Toishigawa 【研川】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

白野 Shirano reference.