Where does “Bărbulești” come from?

Bărbulești (Romanian) comes from Romanian -ești, from Latin -ēscō, from Proto-Italic *-ēskō.

Ancestry of “Bărbulești”, step by step

Step	Language	Word	Meaning
1	Romanian	-ești	plural of -esc; Used with a stem to form the...
2	Latin	-ēscō	Attaches to a stem (a noun or adjective) to form a verb meaning “to become [stem]” or similar
3	Proto-Italic	*-ēskō	—