Etymology and distribution of 浦岩.

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

Aichi-ken , Oosaka-fu , Kanagawa-ken .

① Aichi-ken Anjou-shi Origin of Ooka-cho. A place name with a record since the Heian period.

② Shizuoka-ken Numadzu-shi Originated from Ooka. A place name with a record since the Heian period.

③ Creation . Okayama-ken Tsuyama-shi In Ikehihara he tells that Oka's head family added "Large" and called it in 1888. 岡 Oka reference.

※ Fukui-Ken Fukui-Shi in Fukui-Ken Fukui-Shi (formerly Asuwa County) of tell from Ooka Nanso. A place name with a record in the Kamakura period. Location unknown.

※ Wei series . Nara-ken Nara-shi Originated from the vicinity of Hirooka cho (Okaoka). Place name recorded in the Nara era and the Heian era. There was a family name of Ooka Eiji in the Nara period.