Etymology and distribution of 早岡.

Hayaoka 【早岡】^{レベル3
About 140}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Oosaka-fu , Kanagawa-ken .

① Miyazaki-ken Ebino-shi Birth of Uehara Miyahara. A place name with a record since the Muromachi period. Miyazaki-ken Kobayashi-shi Miyanojiri of Miyazaki-ken at the bank of the tsunami that is to be defined from the Miyano. Kagoshima-ken Kagoshima-shi Shiroyama-machi was a Kagoshima samurai of the Clan office, Miyazaki-ken Miyazaki-shi Sadohara-cho Uedajima was in the Edo period in the Clan Sadahara of the Clan office. 宮原 Miyahara reference.

② Topography . Kagoshima-ken Ichikikushikino-shi From the Miyonohara gate in the upper name of the gate division system which was in the Edo period. The gate name is from the shrine and the field.