It was the day on which Elsa was to be wedded to her tyrant. She had spent the night in tears and bitter lamentations, and now, weary and distraught, too hopeless even for tears, she looked out from the bars of her prison with dull, despairing eyes. Suddenly she heard the melodious strains and a moment later saw the approach of a swan-drawn boat, wherein lay a sleeping knight. Hope leapt within her, for she remembered the prophecy of an old nun, long since dead, that a sleeping knight would rescue her from grave peril. Directly he stepped ashore the youth made his way to the place of her confinement and, espying her face at the heavily barred window, knelt before her and begged that she would take him for her champion. At that moment the blast of a trumpet was heard, followed by the voice of the herald as, for the last time, he challenged any knight to take up arms on behalf of Elsa of Brabant. Lohengrin boldly accepted the challenge, and Telramund, when the news reached him of the unexpected opposition, on the very day he had appointed for his wedding, was surprised and enraged beyond measure, yet he dared not refuse to do battle with the stranger knight, because of the Emperor's decree. So it was arranged that the combat should take place immediately. News of it reached the people of Cleves, and a great concourse gathered to witness the spectacle, all of them secretly in sympathy with the persecuted maiden, though these feelings were carefully concealed from the ruthless Telramund. Fierce indeed was the combat, for Lohengrin, though less powerfully built than his gigantic opponent, was nevertheless tall and strong, and well versed in the arts of war. At length he laid his enemy in the dust with a well-aimed sword-stroke, and the crowd broke into cheers. The combat was over, and Elsa was free! Heeding not the acclamations of the people, Lohengrin strode toward Elsa and again knelt at her feet. The blushing maiden bade him name his reward, whereupon the knight begged her hand in marriage, confessing, however, that he might only remain with her so long as she did not question him with regard to his identity. It seemed a small condition to Elsa, who willingly promised to restrain any curiosity she might feel concerning his name and place of abode. The cheers of the populace were redoubled when they learned that Elsa was to bestow her hand on the Swan Knight. In a few weeks the couple were married, and henceforth for a good many years they lived together very happily. Three sons were born to them, who grew in time to be handsome and chivalrous lads, of noble bearing and knightly disposition. Then it was that Elsa, who had hitherto faithfully kept her promise to her husband, began to fancy that she and her sons had a grievance in that the latter were not permitted to bear their father's name.