Family History and Genealogy Resources by Surname
Radnor Surname Origin
(Origin Cornish British) The enclosure of ferns.
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.
Radnor Surname Meaning and Family Facts
There is more to Radnor family history than the origin of your surname:
A Radnor Family History Thought:
Whenever there's a will, you'll see an heir loom.