Definitions of Northumberland
- the northernmost county of England, on the North Sea; became a unitary authority in
2009: hilly in the north (the Cheviots) and west (the Pennines), with many Roman remains,
notably Hadrian's Wall; shipbuilding, coal mining. Administrative centre: Morpeth.
Pop: 310 600 (2007 est). Area: 5032 sq km (1943 sq miles) Northd
- 1st Duke of, title of John Dudley. 1502–53, English statesman and soldier, who governed England (1549–53) during the
minority of Edward VI. His attempt (1553) to gain the throne for his daughter-in-law,
Lady Jane Grey, led to his execution