Gallus Caesar

After accomplishing these things, Gallus could not bear his success with moderation. He at once began to make moves against the authority of the one who had made him Caesar, for he was himself aiming at the sovereign power. Constantius, however, soon discovered his purpose. For Gallus had dared to put to death, on his own authority and without informing the emperor of his plans, Domitian, who was then praetorian prefect of the East, and Magnus the quaestor. Constantius was extremely angry at this conduct and summoned Gallus to him. Gallus was in great terror and went very reluctantly. When he had come to the western parts and reached the island of Flanona, Constantius ordered him to be killed. Not long afterward, however, he made Julian, the brother of Gallus, Caesar and sent him against the barbarians in Gaul. Gallus, who had the additional name Constantius, was killed in the seventh consulship of the emperor Constantius, when Gallus himself was consul for the third time. Julian was made Caesar on the sixth of November in the following year, when Arbetion and Lollian were consuls. We will say more of him in the next book. [a]

Now that Constantius was freed from the worries that had occupied him, he turned his attention once more to the disputes of the church. So he went from Sirmium to the imperial city of Rome and again called a synod of bishops. He summoned some of the eastern bishops to hurry to Italy, and arranged for those of the West to meet them there. While preparations for this were being made in the East, Julius, bishop of Rome, died after presiding over the church there for fifteen years, and Liberius succeeded him in the office of bishop.