Ozahara 【尾座原】2 The Japanese surnames etymology dictionary.
Iwate-ken . Originated from Yamanashi-ken (formerly Kai County). A place name with a record since the Asuka period. Iwate - ken Shimohei - gun Iwaizumi - chou tells Meiji New Year 's name by Yamanashi - ken (formerly Kai County) who was named "Kai no Masa (Kai no Masa)".