Etymology and distribution of 惠免.

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

Chiba-ken Asahi-shi , Chiba-ken Sousa-shi . Terrain . A variant of 奥津 . In Tokushima-ken tell her that it was renamed by "Oozu" of the word that came from the Okutsu family name. Estimated in the Edo period. 奥津 Okutsu reference.