Ambrosius of Milan, also known as Saint Ambrose, was a prominent bishop in the 4th century, serving as the Bishop of Milan from 374 until his death in 397. He is recognized for his influential role in the early Christian Church and his efforts to promote Christianity in the Roman Empire. Ambrose was also a skilled orator and writer, known for his hymns and theological works. He played a significant role in the conflict between the Church and the Roman state, famously opposing the Emperor Theodosius I over issues of church authority. Ambrose's legacy includes his contributions to the development of Christian doctrine and his influence on later theologians, including Saint Augustine.