After the death of Diocletian, on May 1st, 305, wore the red platoon of the Roman Emperor Constantius I. He was born in Naissos, in a prominent family of Dardania, Kosovo today, by Illyrian parents. He was a prominent military and climbed career ladders in the battlegrounds. Constantius, though not long ruled, became the founder of the Illyrian dynasty Flavia, one of the most prominent of the Roman Empire and the longest on the imperial throne.