Etymology and distribution of 海段.

Kaidan 【海段】^{レベル3
About 50}  The Japanese surnames etymology dictionary.

Shiga-ken . 金井 surname available. In estimation Shiga - ken Hikone - shi Kaname Town is a name change from Kanai surname in the early Edo period by hiding Mr. Ii 's "Ii" which was the lord of Hikone of the Clan office. 金井 Kanai reference.