Anglo-Saxon Chronicle 867 A.D.
Her for se here of East Englum ofer Humbremuþan to Eoforwicceastre on Norþhymbre, ond þær wæs micel ungeþuærnes þære þeode betweox him selfum, ond hie hæfdun hiera cyning aworpenne Osbryht, ond ungecyndne cyning underfengon Ællan; ond hie late on geare to þam gecirdon þæt hie wiþ þone here winnende wærun, ond hie þeah micle fierd gegadrodon, ond þone here sohton æt Eoforwicceastre, ond on þa ceastre bræcon, ond hie sume inne wurdon, ond þær was ungemetlic wæl geslægen Norþanhymbra, sume binnan, sume butan; ond þa cyningas begen ofslægene, ond sio laf wiþ þone here friþ nam
Here the Viking army traveled from East Anglia over the mouth of the Humber River to the castle of York in Northumbria. And there was much discord of the people amongst themselves; and they overthrew their king Osbryht; and accepted instead as king Allan who was of ignoble descent. And they, late that year, turned toward the Vikings so that they engaged them in fighting. And although they gathered a great army and sought the Vikings at York and broke into the castle and some of them got inside, there was unmeasurable slaughter of Northumbrians, some within, some without. And the kings both were slain and the rest made peace with the Vikings.