| Nest | Welsh | Welsh cognate of Agnes (pure, chast.. |  |  |
| Newlyn | Welsh | Meaning "new lake." |  | |
| Olwen | Welsh | Compound name composed of the eleme.. | | |
| Owain | Welsh | A popular name of uncertain derivat.. | | |
| Owena | Welsh | Feminine form of Owen, an old nam.. | | |
| Parry | Welsh | A name that means "son of Harry." | | |
| Pedr | Welsh | Welsh cognate of Peter (rock). See .. | | |
| Peter | Welsh | From the Ecclesiastic Late Latin Pe.. |  | |
| Pewlin | Welsh | Welsh form of the Latin Paullnus, a.. | | |
| Price | Welsh | Meaning "son of the ardent one." | | |
| Pryderi | Welsh | Old Welsh name meaning "caring .. | | |
| Reece | Welsh | Meaning "zealous." | | |
| Rees | Welsh | Anglicized form of Rhys (ardor). Se.. | | |
| Reynold | Welsh | A borrowing from the English, Reyno.. |  | |
| Rheinallt | Welsh | Welsh cognate of Reynold (judgment .. | | |
| Rhiannon | Welsh | Ancient Celtic name of uncertain de.. | | |
| Rhianwen | Welsh | An old name, the first element of w.. | | |
| Rhiariwen | Welsh | This name means "fair maiden."
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| Rhisiart | Welsh | Welsh cognate of Richard (brave rul.. | | |
| Rhodri | Welsh | Compound name composed from the Old.. | | |
| Rhonwen | Welsh | Compound name composed of the eleme.. | | |
| Rhydderch | Welsh | Old name derived from rhydderch (re.. | | |
| Rhys | Welsh | Popular name derived from the eleme.. | | |
| Richard | Welsh | A borrowing from the English and th.. | | |
| Roderick | Welsh | From the Middle Latin Rodericus, wh.. | | |
| Rolant | Welsh | Welsh form of the French Roland, a .. | | |
| Romney | Welsh | This name means "winding river." | | |
| Rowena | Welsh | Meaning "fair-haired and slender."
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| Sabrina | Welsh | Of uncertain etymology, Sabrina is .. | | |
| Samuel | Welsh | Ecclesiastic Late Latin form of the.. | | |
| Sawyl | Welsh | Welsh form of Samuel (name of God, .. | | |
| Shan | Welsh | Anglicized form of Sian, the Welsh .. | | |
| Shanee | Welsh | Anglicized form of Siani, the pet f.. | | |
| Sian | Welsh | Welsh cognate of Jane (God is graci.. | | |
| Siani | Welsh | Pet form of Sian (God is gracious.. | | |
