Oozora 【大空】4 The Japanese surnames etymology dictionary.
① Topography . From the valley of the back. Hyougo-ken Sanda-shi It was in Ono during the Edo period. Aichi-ken Nishio-shi It was in the Edo era in Hirasaka Town. Okuya pronunciation. Good neighbor . Shiga-ken Yasu-shi It is distributed in Shinobehara.
② Ibaraki-ken Higashiibaraki-gun Ibaraki-machi Origin of Okunoya (Okunoya). A place name with a record since the Edo period. Tell him that Mr. Okuya, a descendant of Mr. Otaka, lived in the same place. It is unknown whether Oosaka exists.