XVII. Now the knights of Leon gathered together in their flight, and when they could not find their King they were greatly ashamed, and they turned back and smote the Castillians; and as it befell, they encountered King Don Sancho and took him prisoner, not having those in his company whom he should have had, for his people considered the victory as their own, and all was in confusion. And thirteen knights took him in their ward and were leading him away,--but my Cid beheld them and galloped after them: he was alone, and had no lance, having broken his in the battle. And he came up to them and said, Knights, give me my Lord and I will give unto you yours. They knew him by his arms, and they made answer, Ruydiez, return in peace and seek not to contend with us, otherwise we will carry you away prisoner with him. And he waxed wroth and said, Give me but a lance and I will, single as I am, rescue my Lord from all of ye: by God's help I will do it. And they held him as nothing because he was but one, and gave him a lance. But he attacked them therewith so bravely that he slew eleven of the thirteen, leaving two only alive, on whom he had mercy; and thus did he rescue the King. And the Castillians rejoiced greatly at the King's deliverance: and King Don Sancho went to Burgos, and took with him his brother prisoner. XVIII. Great was the love which the Infanta Doña Urraca bore to her brother King Don Alfonso, and when she heard that he was made prisoner, she feared least he should be put to death: and she took with her the Count Don Peransures, and went to Burgos. And they spake with the Cid, and besought him that he would join with them and intercede with the King that he should release his brother from prison, and let him become a Monk at Sahagun. Full willing was the Cid to serve in any thing the Infanta Doña Urraca, and he went with her before the King. And she knelt down before the King her brother, and besought mercy for Don Alfonso, his brother and hers. And the King took her by the hand and raised her from her knees, and made her sit beside him, and said unto her, Now then, my sister, say what you would have. And she besought him that he would let their brother Don Alfonso take the habit of St. Benedict, in the royal Monastery of Sahagun, and my Cid, and Count Peransures and the other chief persons who were there present, besought him in like manner. And the King took my Cid aside, and asked counsel of him what he should do; and the Cid said, that if Don Alfonso were willing to become a Monk, he would do well to set him free upon that condition, and he besought him so to do. Then King Don Sancho, at my Cid's request, granted to Doña Urraca what she had asked. And he released King Don Alfonso from prison, and Don Alfonso became a Monk in the Monastery at Sahagun, more by force than of free will. And being in the Monastery he spake with Don Peransures, and took counsel with him,