Acilius Severus of Spain, of the family of that Severus to whom Lactantius' two books of Epistles are addressed, composed a volume of mingled poetry and prose which is a sort of guide book to his whole life. This he called Calamity or Trial. He died in the reign of Valentinianus.
Source: De Viris Illustribus (Illustrious Men) (New Advent)