23rd February » Roman Emperor Diocletian orders the destruction of the Christianity known as Christian church in Nicomedia, beginning eight years of Diocletianic Persecution.
24th February » Galerius publishes his edict that begins the Diocletianic Persecution e.g persecution of Christians in his portion of the Roman Empire.
Famous Deaths in History for 303
23rd April » Saint George, Roman soldier and martyr (b. 275)