Etymology and distribution of 亀関.

Kameseki 【亀関】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Yamaguchi-ken , Hokkaidou . Thing . From the silver of the metal. Kumamoto-ken Kikuchi-shi Mr. Yoshie Koshi's town in the eastern Tohoku district (formerly Mutsuokuni) in the Azuchi-Momoyama period tells that there were golden name, silver name, copper name, and money surname. 金 Kon reference. 銅 Akagane reference. 銭 Sen reference.