Events

• The Alamanni invade Italy.
• September - Gallienus aided by Aurelian, defeats the Goths at Battle of Naissus
• Claudius II Gothicus becomes Roman Emperor.
• Claudius II Gothicus defeats the Alamanni at the Battle of Lake Benacus.
• First appearance of the Visigoths as a distinct people.
• Victorinus becomes the fourth Emperor of the Gallo-Roman Empire, following the murders of his predecessors

Births

Deaths

• September - Gallienus, Roman Emperor.
• December 26 - Pope Dionysius
• Postumus, ruler of the Gallic Empire (killed by army)
• Laelianus, ruler of the Gallic Empire (killed by army)
• Marcus Aurelius Marius, ruler of the Gallic Empire (killed by army)