|Dannevirke map by Vilhelm La Cour-,photo of the wall near Rheider Au|
Harald Blueetooth decided that Dannevirke needed to be strengthened.
Æthelred the Unready, the later King of England was born.
After a defeat at battle of Sulcoit, Ivar of Limerick was driven out of Ireland by King Mathgamhain of Munster. Ivar's response was to sail west to Wales to try and carve a new kingdom there.
|Viking Mediterranean raids|
Bishop Sisnando Menéndez of Compostela was killed by vikings, the monastery of Curtis was sacked, and precautions were taken for the defense of the town of Lugo.
|Drakkar - Viking ship|
Ivar and his Limerick vikings were apparently defeated by "the king of Britain" and driven out of Wales.
According to Primary Chronicle, the Pechenegs began the Siege of Kiev.