Where does “Bärbel” come from?

Bärbel (German) comes from German Barbara, from Latin barbara, from Latin barbarus, from Ancient Greek βάρβαρος, from Proto-Indo-European balb-.

Ancestry of “Bärbel”, step by step

Step	Language	Word	Meaning
1	German	Barbara	popular especially in the mid-twentieth century
2	Latin	barbara	a wild, savage, cruel, barbarous, shameless, or...
3	Latin	barbarus	foreign; savage; uncivilized
4	Ancient Greek	βάρβαρος	non-Greek-speaking, foreign; barbaric, brutal,...
5	Proto-Indo-European	balb-	—