Which 4th-century Bishop of Milan baptized Saint Augustine?

Saint Ambrose, the Bishop of Milan, baptized Saint Augustine. The baptism took place in Milan during Easter season in 387, after Augustine’s long intellectual and spiritual struggle with Christianity.

Ambrose was born into a Roman administrative family and became governor of the province centered on Milan before unexpectedly being chosen bishop in 374. He was still a relatively new Christian when elected, but quickly became one of the Latin Church’s most influential leaders. His preaching and biblical interpretation deeply impressed Augustine, who had come to Milan as a rhetoric teacher.

Augustine’s conversion was also shaped by his mother Monica, his reading of Christian and Neoplatonic texts, and his decision to abandon his former life. In the spring of 387, Ambrose baptized Augustine, Augustine’s son Adeodatus, and Augustine’s friend Alypius in Milan. Augustine later described Ambrose with great respect in his Confessions.

The question identifies Ambrose by his office as well as his act: he was not merely a prominent theologian, but Milan’s bishop. He later became one of the four traditional Doctors of the Western Church, alongside Augustine, Jerome, and Gregory the Great.