April: Caracella is assassinated. Julia Maesa begins a revolt with the aim of putting Heliogabalus on the throne of Rome.
May 16: Heliogabalus is named Marcus Aurelius Antoninus Augustus, Emperor of Rome.
June 8: Marcellus Opellius Macrinus is defeated, leaving Heliogabalus‘ claim to the throne unchallenged.
Julia Maesa begins working to replace Heliogabalus with Severus Alexander.
March 11: Heliogabalus is executed when the Praetorian Guard revolt against him. Severus Alexander becomes emperor and launches a massive and successful smear campaign against his predecessor before attempting to erase him from history. Severus also banishes any men with male lovers from public life.
Constantine becomes Rome’s first Christian emperor.