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This bishop was the first person to use the term Catholic Church. He was martyred in Rome in 107.
St. Ignatius of Antioch
This one is a disciple of St. Polycarp, and a bishop. He wrote systematically against heresies including Gnosticism, and was martyred during the reign of Emperor Septimus Severus. He was also the last doctor the church added to the list.
St. Irenaeus
this saint, was a friend and correspondent of St. Ignatius, he was the Bishop of Smyrna, spent his life defending Catholic belief against heresies.
St. Polycarp
one of the most famous martyrs during the reign of Marcus Aurelius. He wrote an important Catholic apologist, or he was an important Catholic apologist. He was born pagan, studied philosophy before converting to Catholicism.
St. Justin Martyr
The deacon who was arrested while celebrating mass. With Pope Saint Sixtus the second famously said, "I am roasted enough on the side. Turn me around."
St. Lawrence
This was a cantankerous and passionate writer, with passion and spirit. For the ascetical life and scholarship, he's best known for translating the Bible from its original sources into the Vulgate, or Latin Common Language.
St. Jerome
This one was a fearless and persistent opponent of Arianism, despite at least five forced This saint's life work was the Nicene Creed. And he wrote many books in its defense and against Aryanism. He also established the creed which becomes the precursor for the Nicene Creed.
St. Athanasius
Athanasius.
This was a hermit and bishop of Caesarea, whose ascetically life set the example for the monastic rule still followed in the East today. Further hint, he influenced the writing of the fourth eucharistic prayer.
St. Basil the Great
This saint, whose papacy gave moral authority and prestige to the office of Pope, he consolidated papal power and secured a re script from Emperor Valentinian III, acknowledging papal jurisdiction.
His strong opposition against heresies and barbarians earned him the title the Great.
St. Leo the Great
Perhaps the greatest church father and dominant figure in Catholic thought until the 13th century, he grew up in North Africa, taught rhetoric in Rome and Milan before having a famous conversion experience in becoming a priest and bishop of Hippo.
St. Augustine of Hippo (of a big city in Africa/water horse)
leading theologian during the time of the Aryan heresy, he's called the Athanasius of the West for his defense of orthodox teaching against the Aryans. Rather than simply condemning the heretics, he tried to explain that some of the disagreements were merely semantic He is from a city that sounds very French
St. Hilary of Poitiers
Who spent time as a rhetorician before entering an ecclesiastical career? He was one of many bishops forced into exile for opposing Aryans. In espousing the Nicene Creed, his teachings and writings used Neoplatonic philosophy and he defended the title, Theotokos, or Mother of God.
St. Gregory of Nyssa
Born in Trier, Germany, he studied law and became a lawyer, and then governor of Milan, this city's Arian bishop died in 373, the people clamored for this man to become bishop. He resisted at first. And eventually he was baptized, ordained, and made bishop. He zealously defended the church's independence from the state, offering counsel and condemnation to the emperors. He opposed Arianism, was an excellent preacher, encouraged monasticism.
St. Ambrose
Studied law and theology. Um, in the Antiochian school, was ordained in 386, was such an excellent preacher, he wrote on the priesthood, a treatise on the importance and duties of a priest. The emperor made him the patriarch of Constantinople against his wishes, but his honesty about Constantinople's moral laxity clashed with the imperial family, leaving the imperial The second banishment, this ailing saint was forced into a death march.
St. John Chrysostom