Saint Sylvester I - Bishop Pope (280-335).
He was a young priest when persecution of the Christians grew worse under the tyrant Diocletian. Sylvester’s courageous acts became known to Saint Melchiad, Pope, who elevated him to the diaconate. His long pontificate of twenty-one years, famous for several reasons, is remembered in particular for the Council of Nicea, the Baptism of Constantine, and the triumph of the Church.
Source: CiaoNapoli.com - Picture: magnificat.qc.ca