Family History and Genealogy Resources by Surname
Onslow Surname Origin
(Locality). From the manor of Onslow, in Shropshire, England. Aunslow signifies a place on a river or stream.
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.
Onslow Surname Meaning and Family Facts
There is more to Onslow family history than the origin of your surname:
A Onslow Family History Thought:
Whenever there's a will, you'll see an heir loom.