Etymology and distribution of 夏沼.

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

Shiga-ken . 古宮 surname is given. Shiga-ken Takashima-shi It was in the Tokyo period as the shrine of Hioki shrine in Imazu-machi. The company's former name tells that it was a shrine from the beginning of the Kofun period before the Kofun period in Iwateki Omijin. 古宮 Komiya reference.