The story
- Proto-Celtic · derived from*Uɸortigernos
- Proto-Brythonic · derived from*Gworθɨɣern
- Late Latin · borrowed fromVortigernus
- English todayVortigern
Borrowed from Late Latin Vortigernus, from Proto-Brythonic *Gworθɨɣern, from Proto-Celtic *Uɸortigernos, from *uɸor- (“over”) + *tigernos (“lord, ruler”).
Etymology from Wiktionary, CC BY-SA 4.0.