Today's Saint (December 31): Sylvester, Priest, Bishop & Confessor
Little is known of Sylvester, who served as bishop of Rome beginning in 314 A.D. - the year of the Edict of Milan. However, his was a very crucial period of Christianity, and included the Edict of Milan which, in effect, ended Christian persecution.
It was also during his bishopric that the Church made its bold proclamation of the orthodox faith at the Council of Nicaea in 325, enabling it to stem back the tide of Arianism and other heresies.
The Day's Propers
Catholic Encyclopedia article
Books Worth Considering
The Treasury of Saints and Martyrs
Oxford Dictionary of the Christian Church
Oxford Dictionary of Saints
The Penguin Dictionary of Saints