Deira
Deira (Brittonic: Dubro or dyfr) was a kingdom in Northern England. The Anglian people living there were known as the Dere. Deira occupied the area that was later called the East Riding of Yorkshire. Deira was one of two early Anglian kingdoms north of the River Humber; the other being Bernicia, their northern neighbor. In the early 7th century they combined to become the kingdom of Northumbria.