Celtic BritonsThe Britons (*Pritanī, Britanni), also known as Celtic Britons or Ancient Britons, were the indigenous Celtic people who inhabited Great Britain from at least the British Iron Age until the High Middle Ages, at which point they diverged into the Welsh, Cornish and Bretons (among others). They spoke Common Brittonic, the ancestor of the modern Brittonic languages. The earliest written evidence for the Britons is from Greco-Roman writers and dates to the Iron Age.
BerniciaBernicia (Bernice, Beornice; Bryneich; Bernicia) was originally the Brittonic Celtic kingdom of Bryneich from the late 4th century and later the Anglo-Saxon kingdom of 'Bernicia' established by Anglian conquerors of the late 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, Tyne and Wear, and Durham, as well as the Scottish counties of Berwickshire and East Lothian, stretching from the Forth to the Tees.
Scottish BordersThe Scottish Borders (the Mairches, () 'the Marches'; Crìochan na h-Alba) is one of 32 council areas of Scotland. It borders the City of Edinburgh council area, Dumfries and Galloway, East Lothian, Midlothian, South Lanarkshire, West Lothian and, to the south-west, south and east, the English unitary authorities of Cumberland and Northumberland. The administrative centre of the area is Newtown St Boswells. The term Scottish Borders, or normally just "the Borders", is also used to designate the areas of southern Scotland and northern England that bound the Anglo-Scottish border.
NorthumberlandNorthumberland (nɔːrˈθʌmbərlənd ) is a ceremonial county in North East England, bordering Scotland. It is bordered by the Scottish Borders to the north, the North Sea to the east, Tyne and Wear and County Durham to the south, and Cumbria to the west. The town of Blyth is the largest settlement. The county has an area of and a population of 320,274, making it the least-densely populated county in England at 64/km2. The south-east is the most densely populated region and contains the largest towns: Blyth (37,339), Cramlington (27,683), and Ashington (27,670).