Etymology and distribution of 牡渡.

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

Iwate-ken , Hokkaidou , Kanagawa-ken .

① Convention . Synthesis of Ogasawara and Onodera. Iwate-ken Ninohe-shi In the Honorary root, tell Mr. Ogasawara that Mr. Onodera donated rice and called it. Estimated in the Edo period. 小笠原 Ogasawara reference. 小野寺 Onodera reference.

② Origin of Aichi-ken Nagoya-shi Kasasa-cho Minami-ku. A place name with a record since the Edo period.