Galerius in Wikipedia

Gaius Galerius Valerius Maximianus (c. 260 - April or May 311), commonly known as Galerius, was Roman Emperor from 305 to 311. During his reign he campaigned, aided by Diocletian, against the Sassanid Empire, sacking their capital Ctesiphon in 299. Early life Galerius was born on a small farm estate, on the site where he later built his palace, Felix Romuliana.[5] His father was a Thracian and his mother Romula was a Dacian woman, who left Dacia because of the Carpians' attacks.[10] He originally followed his father's occupation, that of a herdsman, where he got his surname of Armentarius (Latin: armentum, herd). He served with distinction as a soldier under Emperors Aurelian and Probus, and in 293 at the establishment of the Tetrarchy, was designated Caesar along with Constantius Chlorus, receiving in marriage Diocletian's daughter Valeria (later known as Galeria Valeria), and at the same time being entrusted with the care of the Illyrian provinces. Soon after his appointment, Galerius would be dispatched to Egypt to fight the rebellious cities Busiris and Coptos...