Northern England Mamucium (Manchester) and Cataractonium (Catterick). Britannia Inferior extended as far north as Hadrian's Wall, which was the northernmost border of the Roman Empire. Although the Romans invaded modern-day Northumberland and part of Scotland beyond it, they never succeeded in conquering the reaches of Britain beyond the River Tyne. After the end of Roman rule in Britain and the arrival of the Angles, Yr Hen Ogledd (the "Old North") was divided into rival kingdoms, Bernicia, Deira, Rheged and Elmet. Bernicia covered lands north of the Tees, Deira corresponded roughly to the eastern half of modern-day Yorkshire, Rheged to Cumbria, and Elmet
Newcastle town wall town wall was constructed during the 13th and 14th centuries to repel Scottish invaders. Newcastle is about from the River Tweed, which marks the border between England and Scotland, as it did then. At that time there was a power struggle between England and Scotland, that eventually led to the Wars of Scottish Independence. The Scottish kings were always ready to take advantage of any weakness in the English rule to invade the North of England. An example of this is David I of Scotland, who took advantage of the civil war between Stephen and Matilda to invade Northumberland in