However, after Yoshikata was killed in 1155 by MINAMOTO no Yoshihira (Yoshitomo's eldest son) for the above reason, he spent all his time in Shida no sho and put his energies into developing the land.
しかしこれが元で義賢が久寿2年（1155年）源義平（義朝の長男）に討たれた後は、専ら信太荘にあってその開墾に専念するようになる。