Published by on July 15, 2026 Maxentius, Latin in full Marcus Aurelius Valerius Maxentius. His father, the emperor Maximian, abdicated with Diocletian in 305. In the new tetrarchy (two augusti with a caesar under each) that was set up after these abdications, Maxentius was passed over in favour of Flavius Valerius Severus, who was made a caesar and then, in 306, an augustus.