Okunaka 【奥中】4 The Japanese surnames etymology dictionary.
Oosaka-fu . Personal name . From Ryu Makoto (Ingen Ryuuki) who was a monk at the founder of Hwangjongjong during the Ming and Qing era times. Meiji New surname by monk. An example of a temple. Fu-Oosaka Oosaka-Shi Tennoji-ku, Katsuyama in the ōbaku of SeiHisashiin, Oosaka-Fu Sakai-Shi Mihara District of ōbaku in the Imai Hounji, Oosaka-Fu Tondabayashi-Shi Kada is in the ōbaku Ryuunji, Oosaka-Fu Tondabayashi -shi Kourin temple of Huangjongjong in Koda.