Æthelred of Wessex of Mercia, appealed to him for help against the Vikings. Æthelred and his brother, the future Alfred the Great, led a West Saxon army to Nottingham, but there was no decisive battle, and Burgred bought off the Vikings. In 874 the Vikings defeated Burgred and drove him into exile. In 870 the Vikings turned their attention to Wessex, and on 4 January 871 at the Battle of Reading, Æthelred suffered a heavy defeat. Although he was able to re-form his army in time to win a victory at the Battle of Ashdown, he suffered further defeats on 22 January at
Battle of Niså offered Sweyn unconditional peace without reparations or loss of land, and the two kings concluded peace. Battle of Niså The Battle of Niså ("Slaget ved Niså") was a naval battle fought on 9 August 1062 between the forces of Norwegian king Harald Hardrada and king Sweyn II of Denmark. Harald had claimed the Danish throne since 1047, and had launched raids into Denmark ever since. With his invasion in 1062, he wanted to decisively defeat the Danes, and thus finally be able to conquer Denmark. The battle was won clearly by the Norwegians, but since many Danes managed to escape,