33rd Bishop of Rome and Pope from 314 to 335, his pontificate was marked by the expansion of Christianity and the convocation of the first ecumenical council, that of Nicaea.
Saint Sylvester I was Pope from 314 to 335. His pontificate coincided with a crucial period for the Church, marked by the Constantinian peace and the recognition of Christianity as a legal religion within the Roman Empire. Although he did not personally attend the Council of Nicaea (325), he was represented there by legates, and his apostolic authority was crucial for the acceptance of the conciliar decrees. He is credited with the consecration of several major Roman basilicas, including Saint John Lateran and Saint Peter's.