Northumbria[nôrt̸h um′brē ə]
Northumbria definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
former Anglo-Saxon kingdom in Great Britain, south of the Firth of Forth
Northumbria definition by American Heritage Dictionary
An Anglo-Saxon kingdom of northern England formed in the seventh century by the union of Bernicia and Deira, Angle kingdoms originally established c. A.D. 500. Much of Northumbria fell to invading Danes in the ninth century and was annexed to Wessex in 954.