First century virgin; died at Rome. She was converted to Christianity by Saint Peter, and later ministered to him. Patroness of the treaty concluded between the popes and Frankish emperors. Relics in Saint Peter’s, Rome. Feast, Roman Calendar, 31 May.
- “Saint Petronilla”. . CatholicSaints.Info. 9 August 2013. Web. 9 October 2015. <>