Northumbria[nôrt̸h um′brē ə]
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
former Anglo-Saxon kingdom in Great Britain, south of the Firth of Forth
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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.