Radnor is a Welsh place name, likely meaning ferny shore or reed bank, later used as a surname and given name.
Radnor is a distinguished place name of Welsh and Old English origin, drawn most directly from Radnorshire, the historic county of mid-Wales. The name is thought to derive from the Old English *rēad* ('red') combined with *ofer* or *nor* (a ridge, slope, or promontory), suggesting 'the red ridge' — a reference to the ruddy, iron-rich soils of the Welsh Marches. The town of New Radnor served as a medieval stronghold, and the region figures prominently in the long and turbulent history of the border country between England and Wales.
As a surname, Radnor has aristocratic English pedigree: the Earls of Radnor, a title in the Peerage of Great Britain dating to the seventeenth century, have borne it with distinction. In the United States, Radnor, Pennsylvania — founded by Welsh Quaker settlers in the 1680s — became a prosperous township that carried the name into North American consciousness. The Philadelphia Main Line community of Radnor remains among the most recognizable bearers of the name in America.
As a given name, Radnor occupies the appealing territory of the place-turned-personal-name, a category that has seen considerable growth in recent decades. Like Sutton, Greyson, or Weston, it offers a geographic solidity and a slight aristocratic echo without feeling stuffy. The name's strong consonants and two clean syllables give it an assured, contemporary feel while its deep Celtic-Anglo roots anchor it firmly in history.