Res Gestae
Ammianus Marcellinus
Ammianus Marcellinus. Ammianus Marcellinus, with an English translation, Vols. I-III. Rolfe, John C., translator. Cambridge, MA; London: Harvard University Press; W. Heinemann, 1935-1940 (printing).
Maximianus[*](Ille seems to refer to Maximianus, who wished to resume his imperial power; if so, something is missing from the text.) took refuge with Constantine. Then Galerius made Licinius a Caesar[*](Other writers imply that he was made an Augustus at once.) in Illyricum, and after that, leaving him in Pannonia, returned himself to Serdica, where he was attacked by a violent disease and wasted away so completely, that he died with the inner parts of his body exposed and in a state of corruption[*](Cf. Oros. vii. 28, 12, put rescente introrsum pectore et visceribus dissolutis ) —a punishment for a most
Severus Caesar was low both in character and in origin, given to drink, and hence a friend to Galerius. Accordingly Galerius made Caesars of him and Maximinus, without Constantine having knowledge of any such step. To this Severus were assigned some cities of Pannonia, Italy, and Africa. Through this chance Maxentius became emperor; for Severus was deserted by his men and fled to Ravenna.
Summoned to support his son Maxentius, Herculius came to Ravenna, deceived Severus by a false oath, gave him into custody, and took him to Rome in the condition of a captive; there he had him kept under guard in a villa belonging to the state, situated thirty miles from Rome on the Appian Road.[*](According to Zos. ii. 10, and Pseud.-Aur. Vict., Epit. 40, 3, it was at Tres Tabernae.) When Galerius later went to Italy, Severus was executed; then his body was taken to a place eight miles from the city, and laid in the tomb of Gallienus.