Welsh, Cornish, Breton
"noble friend"

Elwen Origin and Meaning

The name Elwen is both a boy's name and a girl's name meaning "noble friend".
St Elwen is venerated in Cornwall and Brittany, and lent his name to several regional place names. It is also found as a surname, especially in Norfolk, England.

The ancient name Elwen likely derives from Old English elements meaning "noble friend", or possibly "elf friend". Former British Prime Minister David Cameron has a teenage son named Arthur Elwen, who goes by Elwen.