Where does “Pernille” come from?

Pernille (Danish) comes from Latin Petronella, from Latin Petronius, from Proto-Italic *kʷetru-.

Ancestry of “Pernille”, step by step

Step	Language	Word	Meaning
1	Latin	Petronella	—
2	Latin	Petronius	of or pertaining to the gens Petronia
3	Proto-Italic	*kʷetru-	—

Pernille — Etymology, Origin & Word History | Etymology Explorer