Ss. Processus and Martinian worked as guards at a prison in Rome. They guarded Ss. Peter and Paul, Apostles, while they were in prison in Rome. Ss. Peter and Paul converted and baptized Ss. Processus and Martinian. The newly converted Christians were martyred in Rome. Ss. Processus and Martinian are mentioned in the Martyrologium Hieronymianum, a list of martyrs thought to be compiled in the sixth century.