Okashita 【岡下】4 The Japanese surnames etymology dictionary.
Mie-ken , Aichi-ken , Kumamoto-ken .
① Origin of Fukushima-ken Kooriyama-shi Ohara (Koharada). In the Warring States Period, the name of the place with a record as "Small Aratta".
② Kumamoto-ken Aso-gun Oguni-machi Origin of Ueda Kohara (Ohda). It is distributed in the same place.
③ Iwate-ken Hanamaki-shi Originated from Kohara (Okinawa Prefecture) in Oshima-cho, Komagaya-ku. Last name is Oharada, Koharada.