The story
- Proto-Indo-European · derived from*wern-
- Proto-Celtic · derived from*wernā
- Transalpine Gaulish · derived fromuerna“alder”
- English todayVernon
From Transalpine Gaulish uerna (“alder”) (from Proto-Celtic *wernā, from Proto-Indo-European *wern-) + -o, -onis (locative suffix, literally “place of alder trees”).
Etymology from Wiktionary, CC BY-SA 4.0.