Which kingdom was formed by the 7th century unification of Bernicia and Deira?
Bernicia Bernicia Bernicia (Old English: "Bernice", "Bryneich", "Beornice"; Latin: "Bernicia") was an Anglo-Saxon kingdom established by Anglian settlers of the 6th century in what is now southeastern Scotland and North East England. The Anglian territory of Bernicia was approximately equivalent to the modern English counties of Northumberland and Durham, and the Scottish counties of Berwickshire and East Lothian, stretching from the Forth to the Tees. In the early 7th century, it merged with its southern neighbour, Deira, to form the kingdom of Northumbria and its borders subsequently expanded considerably. Bernicia occurs in Old Welsh poetry as "Bryneich" or "Brynaich" and in
Deira death by Oswiu in 651. For a few years subsequently, Deira was governed by Æthelwald son of Oswald of Bernicia. Bede wrote of Deira in his "Historia Ecclesiastica" (completed in 731). Deira Deira (Old English: "Derenrice" or "Dere") was an Anglo-Saxon kingdom in Northern England. The kingdom was previously inhabited by Britons and was first recorded when Anglian warriors invaded the Derwent Valley in the latter half of the fifth century. Deira’s territory extended from the Humber to the Tees, and from the sea to the western edge of the Vale of York. It later merged with the kingdom of