The dates of these martyrs are unknown. The “Martyrologium Hieronymianum” gives under 2 July their names. The Berne manuscript of the Martyrology also gives their burial-place, viz. at the second milestone of the Via Aurelia. The old catalogues of the burial places of the Roman martyrs likewise mention the graves of both these saints on this road. They were publicly venerated in Rome from the fourth or perhaps the third century, although nothing further is known. A legend makes them the keepers of the prison of Saints Peter and Paul. It cannot be shown how the legend came to give them this identification. Pope Paschal I (817-24) translated the bones of the two martyrs to a chapel in the old basilica of Saint Peter; they still rest under the altar dedicated to them in the right transept of the present Saint Peter’s. Their feast is celebrated on 2 July.
- Johann Peter Kirsch. “Saints Processus and Martinian”. . CatholicSaints.Info. 27 June 2015. Web. 5 December 2016. <>