Vortigernus

• Gurthigernus, Guorthegirnus
• Vertigernus, Vurtigernus, Wertigernus (Medieval Latin)

Borrowed from Proto-Brythonic *Gworθɨɣern, from Proto-Celtic *Uɸortigernos (from *uɸor- (“over”) +‎ *tigernos (“lord, ruler”)). First attested in Gildas (late 5th – early 6th century CE).

• (Classical Latin) IPA^(key): [wɔr.tɪˈɡɛr.nʊs]
• (modern Italianate Ecclesiastical) IPA^(key): [vor.t̪iˈd͡ʒɛr.nus]

Vortigernus m sg (genitive Vortigernī); second declension

1. (Late Latin) a male given name from Proto-Brythonic, of historical usage, equivalent to English Vortigern

Second-declension noun, singular only.

• → English: Vortigern