Saint Augustine of Hippo (†430) was an early Christian theologian and philosopher whose writings influenced the development of Western Christianity and Western philosophy. He was the bishop of Hippo Regius in North Africa and is viewed as one of the most important Church Fathers in Western Christianity for his writings in the Patristic Era. Augustine was canonized by popular acclaim and later recognized as a Doctor of the Church in 1298 by Pope Boniface VIII. His feast day is 28 August, and he is venerated by all Christian denominations which venerate saints. He is considered the patron saint of brewers, printers, theologians, sore eyes, and a number of cities and dioceses.
Saint John Chrysostom (c. 349 – 407), the Archbishop of Constantinople, was an important Early Church Father and one of the most prolific authors in the early Christian Church. He is renowned for his preaching and public speaking, his denunciation of abuse of authority by both ecclesiastical and political leaders, the Divine Liturgy of St. John Chrysostom, and his ascetic sensibilities. The epithet Χρυσόστομος (Chrysostomos, anglicized as Chrysostom) means "golden-mouthed" in Greek and denotes his celebrated eloquence. He is honored as a saint in the Oriental Orthodox, Eastern Orthodox, Catholic, Anglican, and Lutheran churches, as well as in some others. The Eastern Orthodox, together with the Byzantine Catholics, hold him in special regard as one of the Three Holy Hierarchs (alongside Basil the Great and Gregory of Nazianzus). The feast days of John Chrysostom in the Eastern Orthodox Church are 13 November and 27 January. In the Roman Catholic Church, he is recognized as a Doctor of the Church. Because the date of his death is occupied by the feast of the Exaltation of the Holy Cross (14 September), the General Roman Calendar celebrates him on the previous day, 13 September. Of other Western churches, including Anglican provinces and Lutheran churches, some commemorate him on 13 September, others on 27 January.