Flavius Valerius Aurelius Constantinus (27 February c. 280 – 22 May 337 AD), commonly known as Constantine I, (among Roman Catholics) and Constantine the Great, or Saint Constantine (among Eastern Orthodox Christians), was a Roman Emperor, proclaimed Augustus by his troops in 306, who ruled an ever-growing portion of the Roman Empire until his death. Best known for being the first Christian Roman Emperor, his Edict of Milan put an end to institutionalized persecution of Christians in the Empire.
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