Etymology and distribution of 智原.

Chihara 【智原】^{レベル3
About 300}  The Japanese surnames etymology dictionary.

Kagawa-ken , Oosaka-fu .

① Kagawa-ken Nakatado-gun Man'nou-chou Originated from the small township of Nagao. Tell them that they used "Nagao" and "Town" in the town. Nagao is a place name with a record since the Heian period.

② Ibaraki-ken Ryuugasaki-shi Tell him that he was engaged in agriculture in Oki-cho. Estimated in the Edo period. Oki-machi was a place name established in 1954. In the Edo era, the place name was called "Oki village".