Where does “Pétronille” come from?

Pétronille (French) comes from Middle French Petronille, from Latin Petronella, from Latin Petronius, from Proto-Italic *kʷetru- — four, quadri.

Ancestry of “Pétronille”, step by step

StepLanguageWordMeaning
1Middle FrenchPetronille—
2LatinPetronella—
3LatinPetroniusof or pertaining to the gens Petronia
4Proto-Italic*kʷetru-four, quadri
Every word from Proto-Italic *kʷetru- →Every word from Latin Petronius →Every word from Latin Petronella →