Where does “Валония” come from?

Валония (Bulgarian) comes from French Wallonie, from French Wallon, from Walloon walon, from Old High German ᚹᚨᛚᚺᚨ, from Proto-Germanic *walh, from Proto-Germanic walhaz, from Latin Volcae, from Proto-Celtic wolkos — wet, damp.

Ancestry of “Валония”, step by step

StepLanguageWordMeaning
1FrenchWallonie
2FrenchWallonperson from or living in Wallonia, Belgium
3WalloonwalonWalloon
4Old High Germanᚹᚨᛚᚺᚨforeigner, stranger, speaker of Celtic or Latin
5Proto-Germanic*walh
6Proto-Germanicwalhazforeigner, non-Germanic person
7LatinVolcaea Gallic tribal confederation; name of a Celtic...
8Proto-Celticwolkoshawk
9Proto-Indo-Europeanwelg-wet, damp
Every word from Proto-Indo-European welg-Every word from Proto-Celtic wolkosEvery word from Latin Volcae