Etymology and distribution of 往谷.

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

Aomori-ken , Hokkaidou .

① Origin of Iwate-ken Kuji-shi Nagauchi-cho. In the Muromachi Period, a place name with a record of "Osanai well". The Ainu language Oppa Nai means "Kawajiri, Dry, Sawa".

② Akita-ken Kadzuno-shi Origin of Chikauchi . A place name with a record since the Warring States Period.

③ Ishikawa-ken Suzu-shi Beginning of Katamachi-cho (former name: Chaunai name). It was in the Edo period in the same place. Last name is also chopped.