Etymology and distribution of 往光.

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

Hokkaidou , Aomori-ken Shimokita-gun Ooma-machi , Saitama-ken .

① Aomori-ken Shimokita-gun Ooma-machi Origin of Okudo (Okoppe (formerly Koibe village)). A place name with a record since the Edo period. It was in the Edo period in the same place. It tells that he resided from the Dejima of Ishikawa-ken north (formerly Noto County) in the Edo era. Location unknown.

② There is distribution in Ishikawa-ken . It was in the Edo period in Ishikawa-ken Kaga-shi .

③ Mie-ken Ise-shi was in the Edo period. In the same place tells that the descendant of Mr. Kita Tadashi changed his name after referring to Shimura surname. 北畠 Kitabatake reference. 四村 Yomura reference.