Etymology and distribution of 細峠.

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

Kagoshima-ken Kagoshima-shi . A variant of the 井 . Ikui (Wakashi) which is a surname of Kagoshima-ken 's Amami archipelago is converted into two letters. Estimated at the time of returning to Japan in 1953. In Aichi-ken it is inconspicuous. 井 I reference.