Etymology and distribution of 島広.

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

Akita-ken Daisen-shi , Hokkaidou .

① 高垣 's variant. Akita-ken Daisen-shi Ota-machi In Kanai Shogenakari , Iwate-ken comes out and tells that it was Takakgi surname in the Edo period. There are also stories saying that he used a high-profile shopkeeper at the same place. 高垣 Takagaki reference.

② Nara-ken Yoshino-gun Kawakami-mura Originated from Takao Tail of the Nishikawa's small character.