Constans I

After Constantine's death, Constans I was proclaimed Augustus alongside his brothers Constantine II and Constantius II. He received the central provinces, including Italy, Africa, and Illyricum. His reign was marked by conflict with his brother Constantine II.

Constans I's forces ambushed and defeated the invading army of Constantine II near Aquileia. Constantine II was killed in the battle, leaving Constans as the sole ruler of the Western Roman Empire. The victory consolidated Constans's control over the West.

Constans I led a successful campaign against the Frankish tribes along the Rhine frontier. He forced the Franks to submit and reinforced the Roman defenses. The campaign demonstrated his military capability and secured the Gallic frontier.

Constans I was overthrown by the usurper Magnentius, who was proclaimed emperor by the army in Gaul. Constans fled toward Spain but was captured and killed by Magnentius's agents at a villa near the Pyrenees. His death ended the rule of Constantine's sons in the West.