Etymology and distribution of 淨原.

Kiyohara 【淨原】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Nagasaki-ken , Fukuoka-ken . Heterogeneity of 五ケ山 . In Oosaka-fu , tell her that it changed from "Gokayama" in Toyama-ken which was the place of residence of Nagasaki-ken and changed to the Tokyo era. There is also a story that in the same place belonged to the Heike in the Ryukyu and Susonaga ravages that had been in 1180 (4 years of jurisdiction) to 1185 (2 years old and 2 years old Susanaga).