This timeline summarises significant events in the history of Northumbria and Northumberland. 500 559 - Ida of Bernicia is the first known King of Bernicia; he reigned from 547 to 559. 588 - The first king of Deira was Ælla of Deira who ruled from 560 until his death in 588. 600 604 - Aethelfrith unites Bernicia and Deira to form Northumbria. 613 - Æthelfrith engaged in the Battle of Chester. 625 - Paulinus is consecrated as Bishop of York. 634 - Lindisfarne Priory founded by Irish monk Saint Aidan. 634/642 - Oswald of Northumbria "reunited the whole of Northumbria". 638 - Gododdin hillfort at Edinburgh is captured by Oswald of Northumbria (see Northumbrian Edinburgh). 664 - Synod of Whitby 664 - Plague in British Isles travels at least as far north as Lastingham. 674 - Hexham Abbey built. 685 - Loss to Picts at Battle of Dun Nechtain (Nechtansmere) limits northern expansion. 687 - Cuthbert, patron saint of Northumbria, dies at his Inner Farne Island hermitage. 700 709 - Acca is appointed as Bishop of Hexham. 715 - Eadfrith creates the Lindisfarne Gospels. 731 - Bede writes the Ecclesiastical History of the English People at Jarrow. 735 - Alcuin of York is born, later a major figure in the Carolingian Renaissance under Charlemagne. 793 - Vikings raid Lindisfarne. 794 - Vikings raid Jarrow. 800 827 - Northumbria accepts Egbert of Wessex as overlord. 865 - Northumbrians led by Aelle II defeat Ragnar Lodbrok's raiding Vikings. 866 - York and southern Northumbria are conquered and settled by the "Great Heathen Army." 867 - Aelle II and Osberht join forces only to be defeated at the Battle of York. 900 915 - Ealdred I of Bernicia and Constantine II of Scotland are defeated by Vikings in the first Battle of Corbridge. 927 - Earldom of Northumbria is created by Athelstan. 937 - Athelstan defeats Norse-Celtic force in the battle of Brunanburh. 947/48 - Eric Bloodaxe King of Northumbria. 952/54 - Eric Bloodaxe King of Northumbria again. 954 Edinburgh is lost to Scottish king Indulf. Eadred of Wessex permanently "absorbed Northumbria into the English Kingdom." 993 - Bamburgh Castle destroyed by the Vikings. 995 - Monks from Lindisfarne establish Durham 1000 1013 - Uhtred the Bold, ealdorman of all Northumbria submitted to Sweyn Forkbeard as did all of the Danes in the north. 1018 - Lothian is lost to the King of