it is considered that Fukagawaomi no mikoto, a son of Takekoro no mikoto, the kuni no miyatsuko of Ibaragi, was appointed as Umakuta no kuni no miyatsuko during the reign of Emperor Seimu.
成務天皇朝に茨城国造建許呂命の子の深河意弥命が馬来田国造になったという。