Etymology and distribution of 納原.

Nouhara 【納原】^{レベル3
About 60}  The Japanese surnames etymology dictionary.

Aichi-ken Toyohashi-shi , Aichi-ken Shinshiro-shi . Terrain . From the place that draws cliffs and water. Aichi-ken Shinshiro-shi Iiyo is a geographical name with a record of "Ishiro" in the Warring States Period. It is distributed in the same place. There is a passage from the neighbor who is near here in the same place. Period, location unknown. Estimated place name commonly called cliff and plain.