Lactantius Lucius Caecilius Firmianus Lactantius was an early Christian author (c. 250 – c. 325) who became an advisor to the first Christian Roman emperor, Constantine I, guiding his religious policy as it developed,[1] and a tutor to his son.

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Lucius Caecilius Firmianus Lactantius was an early Christian author (c. 250 – c. 325) who became an advisor to the first Christian Roman emperor, Constantine I, guiding his religious policy as it developed,[1] and a tutor to his son.