Etymology and distribution of 岩窪.

Iwakubo 【岩窪】^{レベル3
About 200}  The Japanese surnames etymology dictionary.

Miyazaki-ken , Hyougo-ken , Oosaka-fu .

① Miyazaki-ken Miyakonojou-shi Yamada Town Originated from Ushidani in Yamada's small character. On the same site there was a Ushitani gate in the Edo period.

② Occupation . In Toyama-ken Imizu-shi tell from the shop name of Ushiya (Ushiya). Meiji New Last name in estimation.

③ Yamagata-ken Higashiokitama-gun Kawanishi-machi It was in Otsuka during the Edo period. I will tell from Niigata-ken 's Usibei village in the same place. Location unknown. There is also a story that he was engaged in agriculture at the same place descended from the Heike faints. Ushiya is pronounced. 平 Taira reference.