Pope and Martyr
The Church was greatly troubled by heresies during the pontificate of Pius I. In his steadfast championship of the true faith he was powerfully aided by the Jewish convert, St. Justin Martyr, who was in Rome at that time. Pius I died about A.D. 155. According to some accounts he perished by the sword.
Mass of a POPE
O Eternal Shepherd, who appointed blessed Pius I shepherd of the whole Church, let the prayers of this martyr and supreme pontiff move You to look with favor upon Your flock and to keep it under Your continual protection. Through our Lord . . .
We have offered our gifts to You, O Lord. Let Your light graciously shine upon Your Church, so that this flock may everywhere prosper, and its pastors, under Your guidance, may be truly pleasing to You. Through our Lord . . .
O Lord, govern the Church, which You have been pleased to nourish with Your heavenly Food. Guide her by Your powerful direction so that she may enjoy greater freedom and remain unshaken in the fullness of faith. Through our Lord . . .