This post was originally Kenu no kuninomiyatsuko, which was divided into Kamitsukenu no kuninomiyatsuko and Shimotsukenu no kuninomiyatsuko during the period from the reign of Emperor Nintoku to the reign of Emperor Kotoku.
もと毛野国造で、仁徳朝～孝徳朝に下毛野国造と分裂した。