Editing Northumbria (section)

====Halfdan Ragnarsson (r. 876–877)====
{{main|Halfdan Ragnarsson}}
Halfdan Ragnarsson was a Viking leader of the Great Heathen Army which invaded England in 865.<ref>{{harvnb|Venning|2014|p=132}}</ref> He allegedly wanted revenge against Northumbria for the death of his father, who was supposedly killed by [[Ælla of Northumbria]].<ref>{{harvnb|Munch|Olsen|1926|pp=245–251}}</ref> While he himself only ruled Northumbria directly for about a year in 876, he placed [[Ecgberht I of Northumbria|Ecgberht]] on the throne as a client-king, who ruled from 867 to 872.<ref>{{harvnb|Stevenson|1885|p=489}}</ref> Halfdan was killed in Ireland in 877 whilst trying to regain control over [[Early Scandinavian Dublin|Dyflin (Dublin)]], a land he had ruled since 875. There were no further Viking kings in Northumbria until [[Guthred|Guthfrith]] took over in 883.<ref>{{harvnb|Lapidge|Blair|Keynes|Scragg|2013|p=526}}</ref>