8-2. The Revolt of Procopius
But as yet it was not foreign invasion but domestic rebellion which was to endanger the life and throne of Valens. When Procopius had laid the corpse of Julian to rest in Tarsus, he himself discreetly vanished from the sight of kings and courtiers: it was a perilous distinction to have enjoyed the peculiar favour of the dead Emperor. Before long however he grew weary of his fugitive existence: life as a hunted exile in the Crimea was too dearly bought. In desperation he sailed secretly for the capital where he found shelter in the friendly house of a senator Strategius, while a eunuch, Eugenius by name, recently dismissed from the imperial service, put unlimited funds at his disposal. As he wandered unrecognised through the streets, on every hand he heard men muttering of the cruelty and avarice of Petronius, the father-in-law of Valens. The Emperor himself was no longer in Constantinople, and popular discontent seemed only to need its champion. The regiments of the Divitenses and the Tungritani Juniores, on their march from Bithynia for the defence of Thrace, were at the moment in the city. For two days Procopius negotiated with their officers; his gold and promises won their allegiance and in their quarters at the Anastasian Baths the soldiers met under cover of night and swore to support the usurpation. “Leaving the inkpot and stool of the notary,” so ran the scornful phrase of the Court rhetorician, this stage figure of an emperor, hesitating to the last, assumed the purple and with stammering tongue harangued his followers.
Any sensation was grateful to the populace, and they were content to accept without enthusiasm their new ruler. Those who had nothing to lose were ready enough to share the spoils, but the upper classes generally held aloof or fled to the Court of Valens; none of them met Procopius as he entered the deserted senate house. He relied for support upon men's devotion to the family of Constantine; as reinforcements bound for Thrace reached the capital, he came before them with Faustina, the widow of Constantius, by his side, while he himself bore her little daughter in his arms. He pleaded his own kinship to Julian and the troops were won. Gumoarius and Agilo who had served Constantius well were recalled from retirement and put at the head of the army, while to Julian's friend Phronemius was given the charge of the capital. Valentinian had advanced Pannonians, Procopius chose Gauls, for the Gallic provinces had most reason to remember Julian's services to the Empire. Nebridius, recently created praetorian praefect through the influence of Petronius, was held a prisoner and forced to write despatches recalling Julius who was in command in Thrace; the stratagem succeeded and the province was won without a blow. The embassy to Illyricum, however, bearing the newly minted coinage of Procopius, was defeated by the vigilance of Aequitius, every approach, whether through Dacia, Macedonia, or the pass of Succi, being effectually barred.
The news of the revolt reached Valens as he was leaving Bithynia for Antioch, and he was only recalled from abject despair by the counsels of his friends. Procopius with the Divitenses and a hastily collected force had advanced to Nicaea, but before the approach of the Jovii and Victores he retreated to Mygdus on the Sangarius. Once more the soldiers yielded when he appealed to their loyalty to the house of Constantine: the troops of Valens deserting “the degenerate Pannonian,” “the drinker of miserable baxley beer,” went over to the usurper. One success followed another: Nicomedia was surprised by the tribune Rumitalca, who forthwith marched to the north; Valens, who was besieging Chalcedon, was taken unawares and forced to fly for his life to Ancyra. Thus Bithynia was won for Procopius. His fleet under Marcellus attacked Cyzicus and when once the chain across the harbour's mouth was broken the garrison surrendered. With the fall of Cyzicus, Valens had lost the mastery of the Hellespont, while he could expect no help from his brother, since Valentinian had determined that the safety of the whole Roman Empire demanded his presence on the western frontier. Thus during the early months of 366, while Procopius endeavoured to raise funds for the future conduct of the war, Valens could only await the arrival of Lupicinus.
The Emperor's final victory was indeed mainly due to an ill-considered act of his rival. Arbitio, the retired general of Constantius, had supported the usurper, but had declined an invitation to his court, pleading the infirmities of old age and ill-health. Procopius replied by an order that the general's house should be pillaged, thereby turning a friend into a bitter foe. Arbitio on the appeal of Valens joined the camp of Lupicinus; his arrival at once inspired the Emperor with fresh hope and courage, and gave the signal for wholesale defections from the usurper's forces. In an engagement at Thyatira, Gumoarius procured his own capture and carried with him many of his men. After the march of Valens into Phrygia, Agilo in his turn deserted when the armies met at Nacolia. The soldiers refused to continue the struggle (26 May 366).
Procopius was betrayed to the Emperor by two of his own officers and was immediately put to death. Imperial suspicion and persecution had once again goaded a loyal subject to treason and to ruin. His severed head was borne beneath the walls of Philippopolis, and the city surrendered to Aequitius. The ghastly trophy was even carried to Valentinian through the provinces of Gaul, lest loyalty to the memory of Julian should awake treason in the West. Valens could now avenge his terror and sate his avarice. The suppression of the rebellion was followed by a train of executions, burnings, proscriptions, and banishments which caused men to curse the victory of the lawful Emperor.
The plea of kinship with the family of Constantine had induced some thousands of the Gothic tribesmen on the Danube to cross the Roman frontier in support of Procopius. Valens refused to recognise their defence, and depriving them of their weapons settled them in the cities along the northern boundaries of the Empire. When discontent declared itself, in fear of a general attack he acted on his brother's advice, and marched in person to the Danube, and for the three succeeding years (367-369) the Gothic campaign absorbed his attention. With Marcianople as his base of operations, he crossed the river in 367 and 369; in the latter year he conquered Athanarich, and during the autumn concluded an advantageous peace. The Emperor and the Gothic judex met on a ship in midstream, for Athanarich professed himself bound by a fearful oath never to set foot upon Roman soil. During these years Valens, pursuing in the East his brother's policy, strengthened the whole of the Danube frontier line with forts and garrisons.
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