Etymology and distribution of 谷之内.

Taninouchi 【谷之内】^{レベル2
About 20}  The Japanese surnames etymology dictionary.

Okinawa-ken , Okayama-ken , Shizuoka-ken .

① Ryukyus form of 中原 .

② variant of 中原 . Saitama-ken Kodama-gun Kamisato-machi It was in the Edo period as a sword. It is said that it was written as "Nakahara" in the Edo period in the same place.

③ Topography . "Hara" was added to a buddy that is a surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 仲 Naka reference.