ALL SAINTS CELEBRATED IN JUNE Saints celebrated on the 30th of June SAINTS CAIUS AND LEO Today, we also commemorate Saints Caius and Leo. The Roman Martyrology states: "The same day, the saints Caius, priest, and Leo, subdeacon." PRAYER: Grant, we beseech you, almighty God, that the venerable feast of Saints Caius and Leo may increase our devotion and promote our salvation. Through our Lord Jesus Christ, your Son, who lives and reigns with you in the unity of the Holy Spirit, God, for ever and ever. Amen.