Where does “Vienne” come from?

Vienne (Old French) comes from Old High German Wienna, 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 “Vienne”, step by step

StepLanguageWordMeaning
1Old High GermanWienna
2LatinVedunia
3Proto-Celticwiduswood, trees
4Proto-Indo-Europeanh₁weydʰh₁-to separate, divide
5Proto-Indo-Europeandwi-two; apart, asunder
6Proto-Indo-Europeandwóh₁two

Words derived from “Vienne

Every word from Proto-Indo-European dwóh₁