Petronia / Petronilla

Petronia is an ancient Roman cognomen, derived from the Roman gens (clan) Petronia. The gens Petronia was a plebeian family in ancient Rome, known from the early Republic through the Imperial period. The origin of the name Petronius itself is uncertain, but it may be related to the Latin word 'petro' meaning 'ram' or 'petra' meaning 'rock'. As a given name, Petronia was used in Roman times, primarily for women belonging to or associated with this prominent family.

Over centuries, like many Roman names, Petronia fell out of common use after the decline of the Roman Empire. Its revival, if any, has been sporadic and largely confined to regions with a strong classical heritage or among those seeking unique, historically rich names. It remains a rare name in most parts of the world today, valued for its classical roots and distinctive sound.