Arioka 【有岡】5 The Japanese surnames etymology dictionary.
Kagoshima-ken , Yamaguchi-ken . Ioti is rare. Terrain . From the ancient gate of the gate division system that was in the Edo period. An example of the location of the gate. Kagoshima-ken Satsuma-gun Satsuma-chou Nomination. Kagoshima-ken Satsumasendai-shi It is an ancestral mansion in Satomachi-ri. The name of the gate and the name of the mansion are from the land with an amulet.