| Gender | Baby Name | Meaning |
|---|---|---|
  | Celyn | Holly |
| Ceri | Love |
| Ceridwen | Fair poetry |
| Ceron | Beloved |
| Cerys | To Love |
| Cledwyn | Hard and fair |
| Collen | Hazel |
| Crwys | Cross |
| Dafydd | Beloved |
| Delyth | Pretty |
| Dewey | Beloved |
| Dewi | Beloved |
| Dillan | Son of the sea |
| Dillon | Born from the Ocean |
| Dilwyn | Truly blessed |
| Dilys | Genuine |
| Dylan | Son of the sea |
| Eilir | Butterfly |
| Eira | Snow |
| Eirian | Splendid, bright |
| Eirlys | Snowdrop |
| Eirwyn | White as snow |
| Eleri | River name |
| Emlyn | To excel |
| Enfys | Rainbow |
| Enid | Soul |
| Euros | Gold |
| Evan | God is gracious |
| Gaerwn | White fort |
| Garan | Stork |
