The Japanese surnames etymology dictionary.
Hiroshima-ken , Aichi-ken , Oosaka-fu . Terrain . From a big crow. Hiroshima-ken Onomichi-shi In the city of Innoshi Suei (Snoet) I tell him that he was engaged in the shipping industry under the name of Osuya. Estimated in the Edo period. Hiroshima-ken Hiroshima-shi Minami-ku Hiroshima-shi (Ouzu) was a place name that was called "Osu Shinkai" in the Edo period. The place name is also written as "Ozu" and it tells from Mr. Osu's name. Hiroshima-ken Hiroshima-shi Naka-ku Kamamachi was in the Edo period in the Hiroshima samurai of the Clan office. Ehime-ken Ozu (Ouzu) city is a place name with a record in the notation of "Otsu" during the Warring States Period.