Marcus Aurelius Valerius Maxentius, more commonly known as simply Maxentius, ruled in Rome as a usurper from AD 306 until AD 312. His reign came to an abrupt end when he drowned in the Tiber after being defeated at the Battle of the Milvian Bridge by Constantine the Great. As usurpers go, Maxentius had some impressive familial connections. He was the son of the emperor Maximian Herculius, who was raised to the status of co-Augustus by Diocletian in AD 286. He was also the son-in-law of the emperor Galerius, whom Diocletian would create Caesar in AD 293 and name as...