Alfonso VII of León and Castile
Saint Martin of Hinojosa was the fourth abbot of the monastery. He was named bishop of Sigüenza but resigned and returned to the monastery, where he did great works and transformations until converting the primitive building into another one of greater dimensions and of true Cistercian features, which still persists. Alfonso VII of León and Castile laid the first stone of this new construction on March 20 of 1179. It is believed that the works were made under the direction of the master of the cathedral of Sigüenza. They advanced very quickly thanks to the royal protection and the abundant donations.