CONSTANTINE I (also known as CONSTANTINE THE GREAT). Keresztes,Paul. — Constantine. A great Christian monarch and apostle.

Amsterdam, J.C. Gieben, 1981. 218 pp. Softcover. 8vo.Monograph on Constantine I or Saint Constantine, also known as the Roman Emperor Constantine the Great. - - Constantine I (27 February c. 272 - 22 May 337), was a Roman emperor from 306 to 337. Born in Naissus, Dacia Mediterranea (now Niš, Serbia), he was the son of Flavius Constantius, an Illyrian army officer who became one of the four emperors of the Tetrarchy. Constantine served with distinction under emperors Diocletian and Galerius campaigning in the eastern provinces against barbarians and the Persians, before being recalled west in 305 to fight under his father in Britain. After his father's death in 306, Constantine was acclaimed as emperor by the army at Eboracum (York). He emerged victorious in the civil wars against emperors Maxentius and Licinius to become sole ruler of the Roman Empire by 324. Constantine was the first Roman emperor to convert to Christianity.Although he lived much of his life as a pagan, and later as a catechumen, he began to favor Christianity beginning in 312, finally becoming a Christian and being baptised by either Eusebius of Nicomedia, an Arian bishop, or Pope Sylvester I, which is maintained by the Catholic Church and the Coptic Orthodox Church. He played an influential role in the proclamation of the Edict of Milan in 313, which declared tolerance for Christianity in the Roman Empire.[Source: Wikipedia].