The latter was ready for fighting in any form, so that he could fight with honor. But there was doubt in his mind if service under Alfonso was consistent with the honor of a knight. King Sancho had been assassinated while hunting, and it was whispered that Alfonso had some share in the murder. The high-minded Cid would not draw sword for him unless he swore that he had no lot or part in his brother’s death. Twice the Cid gave him the oath, whereupon, says the chronicle, "My Cid repeated the oath to him a third time, and the king and the knights said ’Amen.’ But the wrath of the king was exceeding great; and he said to the Cid, ’Ruy Diaz, why dost thou press me so, man?’ From that day forward there was no love towards My Cid in the heart of the king." But the king had sworn, and the Cid entered his service and soon conquered Castile, so that Alfonso became monarch of Castile, Leon, Galicia, and Portugal, and took the title of Emperor of Spain. As adelantado, or lord of the marches, Ruy Diaz now occupied himself with the Moors,—fighting where hostility reigned, taking tribute for the king from Seville and other cities, and settling with the sword the disputes of the chiefs, or aiding them in their quarrels. Thus he took part with Seville in a war with Cordova, and was rewarded with so rich a present by the grateful king that Alfonso, inspired by his secret hatred for the Cid, grew jealous and envious. During these events years passed on, and the Cid’s two fair daughters grew to womanhood and were married, at the command of the king, to the two counts of Carrion. The Cid liked not his sons-in-law, and good reason he had, for they were a pair of base hounds despite their lordly title. The brides were shamefully treated by them, being stripped and beaten nearly to death on their wedding-journey. When word of this outrage came to the Cid his wrath overflowed. Stalking with little reverence into the king’s hall, he sternly demanded redress for the brutal act. He could not appeal to the law. The husband in those days was supreme lord and master of his wife. But there was an unwritten law, that of the sword, and the incensed father demanded that the brutal youths should appear in the lists and prove their honor, if they could, against his champion. They dared not refuse. In those days, when the sword was the measure of honor and justice, to refuse would have been to be disgraced. They came into the lists, where they were beaten like the hounds that they had shown themselves, and the noble girls were set free from their bonds. Better husbands soon sought the Cid’s daughters, and they were happily married in the end.