| Efnisien | m | Celtic | This mythical figure comes from Welsh mythology and is the son of Bran the Blessed as w… |
| Eilonwy | f | | Eilonwy is an invented girl's name with Welsh origins |
| Eira | f | Norse | Eira is a feminine first name from Wales that is associated with 'the snow' and has its… |
| Eirlys | f | Welsh | The name means 'snowflake' and is pronounced Ärlis, which also means 'snowdrop' |
| Elen | f | Welsh | Elen is interpreted as the Czech and Welsh form of Ellen or Helen, which traces back to… |
| Eleri | f | Latin | Eleri is a Welsh form of the name Hilary, which is derived from Hilaria |
| Elin | f | Danish | The meaning of the name Elin is not definitively established, but there are several lik… |
| Elisud | m | Welsh | The name Elisud has Welsh roots and is derived from the term 'elus', which means friend… |
| Ellanah | f | Welsh | The name Ellanah is derived from a Visigothic source and is a female first name |
| Ellis | u | | The boys' name Ellis is considered an English form of the same family name adopted in t… |
| Eluned | f | Welsh | The name Eluned is a feminine form from Wales and is derived from Eiluned |
| Emlyn | m | Latin | The name Emlyn is regarded as a Welsh derivative of Emilian and originally comes from t… |
| Enfys | f | Welsh | The name Enfys, which is used in Wales for both women and men, literally means 'the rai… |
| Enian | m | English | Enian is a Welsh boy's name that represents a variant of Einion and translates to 'the … |
| Enid | u | English | Enid is used as a female first name in English-speaking countries, while it tends to be… |
| Erin | u | Celtic | The first name Erin is an English form of the Irish-Scottish Eireann, which goes back t… |
| Evaine | u | English | Evaine is a feminine spelling of the name Evan, which is derived from Johannes, a name … |
| Evie | f | English | The name Evie (Évie) has its roots in the English language and is considered a short fo… |
| Excalibur | m | English | The masculine first name Excalibur, which is an English form of the Middle English Exca… |