Traditionally, Yorkshire, Durham and Northumberland were settled by a Saxon group called Anglians, from Angeln (South-West Denmark). They set up two kingdoms: Deira was a kingdom based in East Yorkshire. It is a British word meaning 'Land of the Water Dwellers' because they lived on the banks of the River Humber. The first king was a man named Aelle. He lived in the late 6th century. The kings lived in York. Their Royal monastery was at Whitby. Bernicia was a kingdom based in Northumberland. Its name is the Saxon version of the British Kingdom of Bryneich. The first king was a man named Ida the Burner. He lived in the mid-6th century. The kings lived in Bamburgh. Their Royal monastery was at Lindisfarne. The two kingdoms did not get on and there was a big war between them. Eventually the Deiran Royal family were all killed. The two kingdoms merged and became known as Northumbria. The Kings of Northumbria lived at Yeavering, Bamburgh, York and Doncaster. There were three very famous Kings of Northumbria: Edwin, Oswald & Oswiu. Later, the Vikings took over many parts of Northumbria, especially Yorkshire.