| FEMININE FORMS |
| ANCIENT ROMAN: Petronia |
| DANISH: Pernille |
| DUTCH: Petronella, Pietronella |
| ENGLISH: Parnel, Pernel, Peronel, Petronel |
| FRENCH: Pétronille |
| GERMAN: Petronella |
| ITALIAN: Petronilla |
| LATE ROMAN: Petronilla |
| NORWEGIAN: Pernille |
| POLISH: Petronela |
| ROMANIAN: Petronela |
| SLOVAK: Nela, Petronela |
| SWEDISH: Pernilla, Petronella |
| OTHER FORMS |
| SPANISH: Petrona |