Etymology and distribution of 斧研.

Onotogi 【斧研】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Iwate-ken Kitakami-shi . Originating from Ibaraki-ken Namegata-shi . A place name with a record since the Asuka period. Iwate - ken In Kitakami - shi tells that he used "direction" from the direction to Oka Kataoka with the descendant of Kataoka Child Spring , which is the warrior of the Heian period and the Kamakura period. 片岡 Kataoka reference.