Constantine I., Flavius Valerius Aurelius, called the Great, born in February, 272 A. D.; died July 22, 337. He was the eldest son of Constantius Chlorus, and distinguished himself when but twenty-two years old as a soldier in the expedition to Egypt and Persia. Constantius and Galerius became emperors in 305 respectively of the West and East.
Constantine served in the Eastern Empire under Galerius, but, owing to extensive exposure in the East, he joined his father at Boulogne as the latter was entering upon his expedition against the Picts in North Britain. Constantine succeeded his father as emperor in 306. Soon after he was opposed by two rivals, Maximian and Maxentius, father and son. The son, owing to a quarrel, forced his