Ivar and Ubbe cross the North Sea…
866 CE
Ivar and Ubbe cross the North Sea in 866, with a "great Heathen army" of Danish Vikings, sack York in November, meet King Aelle in battle, and capture him.
According to Viking sources, Ivar sentences him to die according to the custom of Rista Blodörn (’Blood Eagle’), an exceedingly painful death, but the Anglo-Saxon Chronicle for this year states merely that the Vikings “broke into the town, and some of them got in, and there was an unmeasurable slaughter of Northumbrians, some inside, some outside; and both kings were slain, and the survivors made peace with the enemy army.”