He made Sadatsuna, Tsunetaka, Moritsuna, and Takatsuna join the forces of Yoritomo; for this reason, he was approved of his right to have an inherited estate and returned to Sasakinosho.
定綱、経高、盛綱、高綱を頼朝挙兵に従わせ、その功により本領を安堵され、佐々木荘へと戻る。