Constantine I was emperor from July 25, 306 - May 22, 337.
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Cameo of the Crowning of Constantine
Flavius Valerius Aurelius Constantinus was born on February 27, c. 280 and died on May 22, 337 was proclaimed Augustus by his troops at Eboracum (York, England). Constantine is known as "the Great" because of what he did for Christianity. Constantine was the first emperor to convert to Christianity.