Sebastian's 18th-century entry in Acta Sanctorum, still attributed to Ambrose by the 17th-century hagiographer Jean Bolland, and the briefer account in the 14th-century Legenda Aurea, he was a man of Gallia Narbonensis who was taught in Mediolanum (Milan). In 283, Sebastian entered the army in Rome under Emperor Carinus to assist the martyrs. Because of his courage he became one of the captains of the Praetorian Guards under Diocletian and Maximian, who were unaware that he was a Christian. According to tradition, Marcus and Marcellianus were twin brothers from a distinguished family and were deacons. Both brothers married, and they resided in Rome with their wives and children. The brothers refused to sacrifice to the Roman gods and were arrested. They were visited by their parents Tranquillinus and Martia in prison, who attempted to persuade them to renounce Christianity. Sebastian succeeded in converting Tranquillinus and Martia, as well as Saint Tiburtius, the son of Chromatius, the local prefect. Another official, Nicostratus, and his wife Zoe were also converted. It has been said that Zoe had been a mute for six years; however, she made known to Sebastian her desire to be converted to Christianity. As soon as she had, her speech returned to her. Nicostratus then brought the rest of the prisoners; these 16 persons were converted by Sebastian. Chromatius and Tiburtius converted; Chromatius set all of his prisoners free from jail, resigned his position, and retired to the country in Campania. Marcus and Marcellianus, after being concealed by a Christian named Castulus, were later martyred, as were Nicostratus, Zoe, and Tiburtius. Martyrdom Sebastian had prudently concealed his faith, but in 286 it was detected. Diocletian reproached him for his supposed betrayal, and he commanded him to be led to a field and there to be bound to a stake so that the chosen archers from Mauretania would shoot arrows at him. "And the archers shot at him till he was as full of arrows as an urchin is full of pricks, and thus left him there for dead." Miraculously, the arrows did not kill him. The widow of Castulus, Irene of Rome, went to retrieve his body to bury it, and discovered he was still alive. She brought him back to her house and nursed him back to his health. Sebastian later stood by a staircase where the emperor was to pass and harangued Diocletian for his cruelties against