The Anglo-Saxon Chronicle, in its various versions, also has frequent references to the early Viking raids on the British Isles. For example, the entry for the year 793 (Peterborough MS) reads: "Here terrible portents came about over the land of Northumbria, and miserably frightened the people: these were immense flashes of lightning,and fiery dragons were seen flying in the air. A great famine immediately followed these signs; and a little after that in the same year on 8 January the raiding of heathen men miserably devastated God's church in Lindisfarne island by looting and slaughter." The earliest reference, though, is a few years earlier, 787 [789], ominously but briefly telling about the first English encounter with Vikings, during the time of Beorhtric king of Wessex (Peterborough MS): "Here Beorhtric took King Offa's daughter Eadburh. And in his days came first 3 ships of Northmen from Hordaland: and then the reeve rode there and wanted to compel them to go to the king's town because he did not know what they were; and then they killed him. These were the first ships of the Danish men which sought out the land of the English race."
The "Chronicle of Ireland," in its various versions, including portions in the Irish language (mostly) and portions in Latin, has many references to Viking activity, as this collection of relevant entries by Clare Downham makes it easy to see at a glance.
Cf. also the Frankish Annals for roughly similar kinds of sources from the continent.