Where does “Wienna” come from?

Wienna (Old High German) comes from Latin Vedunia, from Proto-Celtic widus, from Proto-Indo-European h₁weydʰh₁-, from Proto-Indo-European dwi-, from Proto-Indo-European dwóh₁ — two.

Ancestry of “Wienna”, step by step

Wienna traces back through two separate lines of ancestry.

via Latin Vedunia

StepLanguageWordMeaning
1LatinVedunia
2Proto-Celticwiduswood, trees
3Proto-Indo-Europeanh₁weydʰh₁-to separate, divide
4Proto-Indo-Europeandwi-two; apart, asunder
5Proto-Indo-Europeandwóh₁two

via Latin Vindobona

StepLanguageWordMeaning
1LatinVindobona
2Gaulish*Windobona

Words derived from “Wienna

Every word from Proto-Indo-European dwóh₁Every word from Proto-Indo-European dwi-Every word from Proto-Indo-European h₁weydʰh₁-