However, Michiyasu NAKA, one of the Naka clan members, who sided with the samurai, was assigned to Edo-go of Naka County and his son Michitaka adopted Edo as his family name.
しかし、那珂氏の一族である那珂通泰は武家方につき、那珂郡江戸郷を封ぜられ、子の江戸通高の代に江戸氏を称するようになる。