Etymology and distribution of 段川.

Dangawa 【段川】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Hyougo-ken , Okayama-ken . There is Chanagong in the name of a man.

※ 長宗我部 There surname. Kouchi-ken Tosashimizu-shi It was in Azuchi-Momoyama period in Misaki. 長宗我部 Chousokabe reference.

※ There was a case in Osaka -fu northern part · Hyougo-ken Southeast part (formerly Settsu national) for 835 (Seiwa 2 years) who gave a family name of Nagasaku Yuen.