Sanemitsu 【実光】3 The Japanese surnames etymology dictionary.
Tochigi-ken , Ehime-ken , Shiga-ken . 白井 's variant. In estimation Shiga - ken Hikone - shi Kaname Town is a name change in the early Edo period early in the "well" of Mr. Ii who was the lord of Hikone of the Clan office. It was in the Edo period to the same clan.