Vetranio Claims Caesar: Rome's Empire Divides

Vetranio was proclaimed Caesar by his troops at Mursa in Pannonia on March 1, 350, with the encouragement of Constantina, the sister of Emperor Constantius II. The empire was fragmenting: the usurper Magnentius had just murdered Emperor Constans in Gaul, and Constantius was occupied fighting the Sassanid Persians on the eastern frontier. Vetranio, a veteran general with decades of service, initially appeared to be a genuine contender for power. He controlled the Danube legions, commanded significant loyalty, and briefly allied with Magnentius. But when Constantius marched west and addressed Vetranio's troops directly at Naissus on December 25, 350, the soldiers switched allegiance on the spot. Vetranio peacefully abdicated, reportedly kneeling before Constantius and removing his own diadem. Constantius rewarded his submission with a generous pension and a comfortable retirement estate in Bithynia, making Vetranio one of the very few Roman usurpers to die of natural causes in old age.