Etymology and distribution of 坂水.

Sakamizu 【坂水】^{レベル3
About 200}  The Japanese surnames etymology dictionary.

Okinawa-ken . Creation . Okinawa-ken Uruma-shi In Yonagi Heiya za say that he added "Yuan" in the meaning of "Honkei" to his apology name surname. It was in the Ryukyu Kingdom era on the same day. 謝名 Jana reference.