July 30: ST. PETER CHRYSOLOGUS, Bishop and Doctor of the Church. 5 min read July saints and feasts St. Peter Chrysologus July 30: ST. PETER CHRYSOLOGUS, Bishop and Doctor of the Church. catholicsstrivingforholiness July 29, 2021 July 30: ST. PETER CHRYSOLOGUS, Bishop and Doctor of the Church. Biographical sketch. Chrysologus means: the one... Read More Read more about July 30: ST. PETER CHRYSOLOGUS, Bishop and Doctor of the Church.