Etymology and distribution of 恩井.

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

Kagoshima-ken . Kagoshima-ken Amami-shi There is a distribution in Naze Sajikuma-cho. Kagoshima-ken 's Amami archipelago is the first surname on the same day, won, Hisato. 勝 Katsu reference. 久 Hisashi reference.