Araoka 【荒岡】4 The Japanese surnames etymology dictionary.
① Kagoshima-ken Makurazaki-shi Originated from a garden of a small character in Tabukawa- cho. Aomonomon which was in the Edo era in the same place was the name of a gate whose name was recorded as "Yannonkien" in 1767 (Meiwa 4).
② Topography . Kagoshima-ken Minamikyuushuu-shi From the garden gates of the gate division system that was in the Edo era in Furusato Nagori. The gate name is from the garden with a favorable character "yes".