Etymology and distribution of 是廣.

Korehiro 【是廣】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Aomori-ken San'nohe-gun Hashikami-chou . Summary . Combining downward and Hyuga. Aomori - ken San'nohe - gun Hashikami - chou In Dobutsu Buddha say that he called it from downward family name and Hyuga family name that was next to him in the same place. Estimated in the Edo period. 下向 Shimomukai reference. 日向 Hinata reference.