Family History and Genealogy Resources by Surname
Northumberland Surname Origin
Locality. A county of England. North-Humber-land, the land on the north side of the river Humber.
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.
Northumberland Surname Meaning and Family Facts
There is more to Northumberland family history than the origin of your surname:
A Northumberland Family History Thought:
'The only thing new in the world is the history you don't know.' --Harry S. Truman