Etymology and distribution of 炭沢.

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

Toyama-ken Toyama-shi , Oosaka-fu , Hyougo-ken . Toyama-ken Toyama-shi Bunka Town Noritsunin is a place name with a record since the Edo period. It is based in the same place. Hyougo-ken Himeji-shi Honmachi was in the Edo period in the Himeji Samurai of the Clan Office. 為ケ井 There surname. 為ケ井 Tamegai reference.

* Toukyou-to Chiyoda-ku Chiyoda was in the Edo era as the shogunate of the Edo shogunate of the government agency.

※ Niigata-ken Murakami-shi Honmachi was in the Edo period in the Clan Murakami of the Clan Office.