The Year 350 in the Roman Empire
January 18 - Magnentius was proclaimed emperor by the army in Autun. January - Emperor Constans was killed by Magnentius, a usurper. June 3 - Nepotianus proclaimed himself Emperor and entered Rome, leading a group of gladiators. June 30 - Nepotianus was defeated and killed by Marcellinus, general sent by Magnentius.

The Year 350 in the Roman Empire
January 18 - Magnentius was proclaimed emperor by the army in Autun. January - Emperor Constans was killed by Magnentius, a usurper. June 3 - Nepotianus proclaimed himself Emperor and entered Rome, leading a group of gladiators. June 30 - Nepotianus was defeated and killed by Marcellinus, general sent by Magnentius.