Where does “Eflak” come from?

Eflak (Turkish) comes from Church Slavonic влахъ, from Proto-Slavic volxъ, from Proto-Germanic walhaz, from Latin Volcae, from Proto-Celtic wolkos, from Proto-Indo-European welg- — wet, damp.

Ancestry of “Eflak”, step by step

Step	Language	Word	Meaning
1	Church Slavonic	влахъ	—
2	Proto-Slavic	volxъ	a Roman, a speaker of a Romance language
3	Proto-Germanic	walhaz	foreigner, non-Germanic person
4	Latin	Volcae	a Gallic tribal confederation; name of a Celtic...
5	Proto-Celtic	wolkos	hawk
6	Proto-Indo-European	welg-	wet, damp

Every word from Proto-Indo-European welg- →Every word from Proto-Celtic wolkos →Every word from Latin Volcae →