Etymology and distribution of 恩井.

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

Yamaguchi-ken , Tottori-ken , Fukuoka-ken .

① Nara-ken Yamabe-gun Yamazoe-mura Origin of Katsuhara. A place name with a record since the Kamakura period.

② Yamaguchi-ken Shimonoseki-shi In Kikkawa-cho Kochi Kiyoshi, tell Fujiwara's descendant. Fujiwara has "Hara". 藤原 Fujiwara reference.

③ Topography . "Hara" was added to the victory of Kagoshima-ken 's Amami archipelago's first character. Estimated at the time of returning to Japan in 1953. Kagoshima-ken Ooshima-gun Isen-chou It is distributed in Izen. Where to 勝 there last name. 勝 Katsu reference.