After the defeat of Atsutane, however, his son became the head of the family due to the intervention of Shigeuji ASHIKAGA, the Koga Kubo (the Ashikaga family based in Koga, the Kanto region).
だが、康胤の滅亡後、古河公方足利成氏の介入によってその息子が千葉氏の当主となる。