What Happened in June 350 AD
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- Jun 3 Roman usurper Nepotianus, of the Constantinian dynasty, proclaims himself Roman Emperor, entering Rome at the head of a group of gladiators.
- Jun 30 Roman usurper Nepotianus, of the Constantinian dynasty, is defeated and killed by troops of the usurper Magnentius, in Rome
- Jun 30 Nepotianus, Roman usurper (ruled Rome for 28 days), killed on orders of rival Magnentius