Etymology and distribution of 丹原.

Tanbara 【丹原】^{レベル4
About 900}  The Japanese surnames etymology dictionary.

Hiroshima-ken . There is a 新居 last name. 新居 Arai reference.

Nihara 【丹原】^{レベル4
About 900}  The Japanese surnames etymology dictionary.

Hiroshima-ken , Shimane-ken , Okayama-ken .

① Topography . From Maki and Hara. Shimane-ken Izumo-shi In Funatsu-cho, I tell him that Mr. Masayuki Masaki, who was a vassal of Mr. Mouri, came and visited after battling Sekigahara in 1600 (Keioi 5 years) at Gifu-ken Fuwa-gun Sekigahara-chou . 佐々木 Sasaki reference. Okayama-ken Niimi-shi Shogo was in the Edo era in Shimonjyo. Aichi-ken Shinshiro-shi Toyooka (formerly Makihara) is a place name with a record since the Sengoku period.

② Shimane-ken Matsue-shi Originated from Mikihara in Oshino Shimane Prefecture.