Etymology and distribution of 子坂.

Kosaka 【子坂】^{レベル2
About 40}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Kumamoto-ken , Hyougo-ken .

① Topography . From the gate bank of the gate division system that was in the Edo era. An example of the location of the gate. Kagoshima-ken Satsumasendai-shi祁 戸 院 町 町 Kuroki. The gate name comes from "永" of village and favorite.

② Creation . "Yong" was added to the villa which is the surname of Amagi archipelago of Kagoshima-ken . Estimated at the time of returning to Japan in 1953. 里 Sato reference.