Prison guard at the Mamertine prison in Rome, Italy. Worked with Saint Martinian. Guarded Saint Peter the Apostle and Saint Paul the Apostle when they were imprisoned in Rome. Converted to Christianity and was baptized by them. Tortured and executed in the persecutions of Nero. Martyr.
- publicly venerated from the 4th century
- “Saint Processus of Rome“. CatholicSaints.Info. 16 October 2016. Web. 28 October 2016. <>