The story
- Old Norse · derived fromeyjar“islands”
- Proto-Celtic · derived from*is-
- English todayAire
Possibly from Proto-Brythonic; from Proto-Celtic *is- (from Proto-Indo-European *h₁eysh₂- (“to strengthen”)) + *–arā-. However, Old Norse eyjar (“islands”) has also been suggested.
Etymology from Wiktionary, CC BY-SA 4.0.