Etymology and distribution of 古志谷.

Koshitani 【古志谷】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Toukyou-to Shinagawa-ku , Tottori-ken Yonago-shi . Distribution that also includes diamonds.

① Toukyou-to Shinagawa-ku Distributed in Oyamadai.

② Shimane-ken Matsue-shi Originated in Sasaro (Shiseido), Shinicho Town. In the Nara period the name of the place with a record in the notation of "san." Tottori-ken tells that Yonago-shi used the shop name of Sasafuya in the Edo period. The pronunciation is loose.