Ammianus Marcellinus Res Gestae 29.1.44

[44] Lo! even Alypius also, former vice-governor of Britain, ¹ a man amiable and gentle, after living in leisure and retirement—since even as far as this had injustice stretched her hand—was made to wallow in utmost wretchedness; he was accused with his son Hierocles, a young man of good character, as guilty of magic, on the sole evidence of a certain Diogenes, a man of low origin, who was tortured with every degree of butchery, to lead him to give testimony agreeable to the emperor, or rather to the instigator of the charge. Diogenes, when not enough of his body was left for torture, was burned alive; Alypius himself also, after confiscation of his goods, was condemned to exile, but recovered his son, who was already being led to a wretched death, ² but by a lucky chance was reprieved.