However that may be, Damasus, from his palace by the Lateran Basilica, continued to strengthen his new authority and to regulate the disordered Church. Rome still harboured numbers of rebels, and they seem to have caused him serious annoyance by a persistent charge that, in earlier years, he had sinned with a Roman matron. A converted and relapsed Jew was put forward as the chief witness to the charge, and, when the young Emperor Gratian had failed to impress Rome by his personal assurance that Damasus was innocent, a Roman synod of forty-four bishops professed to investigate and dismiss the accusation. Ursicinus was now, however, living at Milan, and it is not implausibly suggested that his insistence made some impression on the puritanical young Emperor. The case was submitted to the Council of Aquileia in 380, at which St. Ambrose presided, and the bishops declared the innocence of Damasus and demanded the secular punishment of his accusers, who were now scattered over Europe. The Roman rebels then masked their hostility by joining an eccentric, though orthodox, sect in the capital whose ascetic leader bore the name of Lucifer. On these Luciferians in turn the hand of Damasus fell with ruthless severity. Their renowned Macarius, the champion faster of the time outside the Egyptian desert, was physically dragged into court and banished, and the "police" pursued them from one secret meeting-place to another. It is at this time that Faustinus and Marcellinus, who had joined the rigorous sect, addressed their _Libellus_ to the Emperors. Over the remainder of Italy and over Gaul Damasus did not press the virtual primacy which he had won from the imperial authorities, and the later language of Leo and Gregory makes it advisable for us to grasp clearly the situation in the fourth century. There was no question of Papal supremacy. No important decision was reached by Damasus apart from a synod, and the See of Milan was not regarded as subordinate in authority to that of Rome; though St. Ambrose naturally expressed a peculiar respect for the doctrinal tradition of a church that had been founded by the great apostles. When the Spanish Priscillianists applied to Italy for aid, they appealed, says Sulpicius Severus, "to the _two_ bishops who had the highest authority at that time." When the great struggle with the pagan senators over the statue of Victory took place in 382, it was Ambrose who championed Christianity, Damasus merely sending to him the Roman petition. But Damasus knew the theoretical strength of his position, and knew, as a rule, when to enforce it. In 378, the Emperors severed Illyricum (Greece, Epirus, Thessaly, and Macedonia) from the Western Empire. Damasus at once contrived that its bishops should look not to the Eastern churches but to himself for direction and support, and from that time onward the Bishop of Thessalonica became the "Vicar" of the Bishop of Rome.