Then when the Cid saw that he could by no means turn him from that course, he advised him to obtain the love of his brother King Don Alfonso, that he might grant him passage through his kingdom to go against Don Garcia: and if this should be refused he counselled him not to make the attempt. And the king saw that his counsel was good, and sent his letters to King Don Alfonso beseeching him to meet him at Sahagun. When King Don Alfonso received the letters he marvelled to what end this might be: howbeit he sent to say that he would meet him. And the two kings met in Sahagun. And King Don Sancho said, Brother, you well know that King Don Garcia our brother hath broken the oath made unto our father, and disherited our sister Donya Urraca: for this I will take his kingdom away from him, and I beseech you join with me. But Don Alfonso answered that he would not go against the will of his father, and the oath which he had sworn. Then King Don Sancho said, that if he would let him pass through his kingdom he would give him part of what he should gain: and King Don Alfonso agreed to this. And upon this matter they fixed another day to meet; and then forty knights were named, twenty for Castille and twenty for Leon, as vouchers that this which they covenanted should be faithfully fulfilled on both sides. Then King Don Sancho gathered together a great host. He sent Alvar Fanez, the cousin of the Cid, to King Don Garcia, to bid him yield up his kingdom, and if he refused to do this to defy him on his part. When King Don Garcia heard this he was greatly troubled, and he said to Alvar Fanez, Say to my brother that I beseech him not to break the oath which he made to our father; but if he will persist to do this thing I must defend myself as I can. He called his chief captains together and they advised him that he should recall Don Rodrigo Frojaz, for having him the realm would be secure, and without him it was in danger to be lost. So two hidalgos [Footnote: A man belonging to the lower nobility, a gentleman by birth] were sent after him, and they found him in Navarre, on the eve of passing into France. But when he saw the king's letters, and knew the peril in which he then stood, setting aside the remembrance of his own wrongs, like a good and true Portuguese, he turned back, and went to the king. In good time did he arrive, for the captains of King Don Sancho had now gained many lands in Galicia and in the province of Beira, finding none to resist them. When Don Rodrigo heard this and knew that the Castillians were approaching he promised the king either to maintain his cause, or die for it. He ordered the trumpets to be sounded, and the Portugueze sallied, and a little below the city the two squadrons met. The Portugueze fought so well, and especially Don Rodrigo, and his brothers, that at length they discomfited the Castillians, killing of them five hundred and forty, of whom three hundred were knights, and winning their pennons and banners.