At last in the winter of 1013-1014, more as it would seem from sheer disgust at their king's cowardice and incompetence than because further resistance was impossible, the English gave up the struggle and acknowledged Sweyn as king. First Northumbria, then Wessex, then London yielded, and Æthelred was forced to fly over seas to Richard, duke of Normandy, whose sister he had married as his second wife. But Sweyn survived his triumph little over a month; he died suddenly at Gainsborough on the 3rd of February 1014. The Danes hailed his son Canute, a lad of eighteen, as king, but many of the English, though they had submitted to a hard-handed conqueror like Sweyn, were not prepared to be handed over like slaves to his untried successor. There was a general rising, the old king was brought over from Normandy, and Canute was driven out for a moment by force of arms. He returned next year with a greater army to hear soon after of Æthelred's death (1016). The witan chose Edmund "Ironside," the late king's eldest son, to succeed him, and as he was a hard-fighting prince of that normal type of his house to which his father had been such a disgraceful exception, it seemed probable that the Danes might be beaten off. But Æthelred's favourite Eadric Streona adhered to Canute, fearing to lose the office and power that he had enjoyed for so long under Æthelred, and prevailed on the magnates of part of Wessex and Mercia to follow his example. For a moment the curious phenomenon was seen of Canute reigning in Wessex, while Edmund was making head against him with the aid of the Anglo-Danes of the "Five Boroughs" and Northumbria. There followed a year of desperate struggle: the two young kings fought five pitched battles, fortune seemed to favour Edmund, and the traitor Eadric submitted to him with all Wessex. But the last engagement, at Assandun (Ashingdon) in Essex went against the English, mainly because Eadric again betrayed the national cause and deserted to the enemy. Edmund was so hard hit by this last disaster that he offered to divide the realm with Canute; they met on the isle of Alney near Gloucester, and agreed that the son of Æthelred should keep Wessex and all the South, London and East Anglia, while the Dane should have Northumbria, the "five boroughs" and Eadric's Mercian earldom. But ere the year was out Edmund died: secretly murdered, according to some authorities, by the infamous Eadric. The witan of Wessex made no attempt to set on the throne either one of the younger sons of Æthelred by his Norman wife, or the infant heir of Edmund, but chose Canute as king, preferring to reunite England by submission to the stranger rather than to continue the disastrous war.