Etymology and distribution of 二原.

Nihara 【二原】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Okayama-ken , Toukyou-to , Kanagawa-ken . 真上 surname.

※ Nara-ken Takaichi-gun Asuka-mura Origin of Asuka (old: Shin Kanbara). Place name with a record since the Kofun period. There was also pronunciation of Makamihara with the place name written as "Shinobara". In Nara-ken there was Shinjinodori family name during the Heian period. Tell the descendant of Han Fukutoku. Fukutoku is an unknown person.