Nagasawa 【長沢】6 The Japanese surnames etymology dictionary.
Kyouto-fu , Shimane-ken · Yamaguchi-ken . Terrain . From the land in the corner of Hiiikawa flowing through Shimane-ken (aka: Hikawa). Shiga - ken Ootsu - shi Tell him that he was taking iron sand at the corner of the river in the moon. Shimane-ken Un'nan-shi Distributed in Kawade, Yoshida-machi. The land is the land where Hii River flows.