340s births

Jerome (; ; ; – 30 September 420), also known as Jerome of Stridon, was an early Christian priest, confessor, theologian, translator, and historian; he is commonly known as Saint Jerome.

Church Father, Archbishop of Constantinople and Christian saint (c. 347–407)

Ambrose of Milan (; 4 April 397), canonized as Saint Ambrose, was a theologian and statesman who served as Bishop of Milan from 374 to 397.

consul of the Roman Empire 391, orator (340-402)

monk, historian, and theologian

Chinese painter and politician (c. 344–406)

Poemen the Great (Greek: Ὁ Ἅγιος Ποιμήν; ποιμήν means "shepherd") (c. 340–450) was a Christian monk and early Desert Father who is the most quoted Abba (Father) in the Apophthegmata Patrum (Sayings of the Desert Fathers). Poemen was quoted most often for his gift as a spiritual guide, reflected in the name "Poemen" ("Shepherd"), rather than for his asceticism. He is considered a saint in Eastern Christianity. His feast day is August 27 in the Julian calendar (September 9 in the Gregorian calendar).