Etymology and distribution of 古信.

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

Kagoshima-ken , Tokushima-ken , Hiroshima-ken .

① Topography . "Oka" was added to the guardian who is the surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 保 Tamotsu reference.

② Topography . From Oka. "Keeping" is a favorable character. Tokushima-ken Mima-gun Tsurugi-chou Sayaka tells me in Meiji New Year in Hiroya. Okayama-ken Niimi-shi , Okayama-ken Takahashi-shi Shimane Prefecture Shimane-ken Hamada-shi Tatei - machi was in the Edo period in the Hamada Samurai of the Clan office.