Northumbria, earlier name of Great Britain
Not quite, it was one of several kingdoms covering a large part of what is today the English midlands, the northern region around the river Humber (hence the name) including modern day Yorkshire and Cumbria, and a part that today belongs to Scotland. There is a modern county (the north-eastern most) of the name too, but it is much smaller than that kingdom used to be. Excuse the little lesson, the historian just couldn't shut up
Sussex - Another petty kingdom in Great Britain which today has been reduced to a county on England's southern coast.