Res Gestae

Then he passed on to abuse the memory of Constantine as an innovator and a disturber of the ancient laws and of customs received of old, openly charging that he was the very first to advance barbarians even to the rods and robes of consuls. In so doing he showed neither good taste nor consideration; for instead of avoiding a fault which he so bitterly censured, he himself soon afterwards joined to Mamertinus as colleague in the consulship Nevitta,[*](In 362. Nevitta was a Frank by birth.) a man neither in high birth, experience, nor renown comparable with those on whom Constantine had conferred the highest magistracy, but on the contrary uncultivated, somewhat boorish, and (what was more intolerable) cruel in his high office.