Etymology and distribution of 観海.

Kankai 【観海】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Ibaraki-ken , Toukyou-to , Saitama-ken .

① Topography . From recesses and valleys. In Ibaraki-ken , Kubonoya. Ibaraki-ken Itako-shi is the origin of the estimation. Toyama-ken Takaoka-shi Fukuoka cho Tsuchiya is based.

② Miyazaki-ken Kobayashi-shi Originated in Makoto Kubotani (Kubotani). There was Kubotani gate of the gate division system in the Edo period in the same place.

Miumi 【観海】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

観海カンカイ参照。