After the English from Wessex absorbed the Danish-ruled territories south of the Tees, Scots invasions reduced the rump Northumbria to an earldom stretching from the Tyne to the Tweed. The surviving Earldom of Northumbria, alongside the Haliwerfolk between the Tyne and Tees, were then disputed between the emerging kingdoms of England and Scotland, with the Earldom being split roughly in half along the River Tweed.
After the English from Wessex absorbed the Danish-ruled territories south of the Tees Scots invasions reduced the rump Northumbria .to an earldom stretching from the Tyne to the Tweed. The surviving Earldom of Northumbria, alongside the Haliwerfolk between the Tyne and Tees were then disputed between the emerging kingdoms of England and Scotland, with the Earldom being split rough,ly in, half along the River Tweed