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Ambrose of Milan

Ambrose of Milan

339 CE–397 CE · Augusta Treverorum (Trier)

Ambrose of Milan (c. 339–397) was a Roman imperial governor who was acclaimed bishop of Milan by popular demand in 374, despite being only a catechumen at the time. He became one of the four original Doctors of the Western Church, defending ecclesiastical independence against emperors Valentinian II and Theodosius I, composing influential theological and ethical works, and playing a decisive role in the conversion of Augustine of Hippo.

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Did you know?

  • From unbaptized governor to bishop in about eight days

    When the see of Milan fell vacant in 374 CE, the Roman provincial governor Ambrose stepped in to calm a disputed election — and the crowd instead acclaimed him bishop, though he was still an unbaptized catechumen. He was baptized and, by tradition about a week later, consecrated bishop of Milan.

    How we know

    Ambrose of Milan c. 339–397; governor of Aemilia-Liguria, acclaimed and consecrated bishop of Milan on 7 December 374 while still unbaptized (baptized about eight days earlier).

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Stop 1 of 5339–354Birthplace, Childhood

Augusta Treverorum (Trier)Germany

What they did here

Ambrose was born c. 339 in Trier, then seat of the Praetorian Prefecture of Gaul where his father served as prefect, and spent his earliest years there before his father's death (Paulinus, Vita Ambrosii 3).

About Augusta Treverorum (Trier)

Augusta Treverorum (modern Trier, western Germany), a major late-Roman imperial residence on the Moselle. Athanasius spent his first exile there; the apologist Lactantius tutored Constantine's son at the court; Ambrose was born in the city.

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In the same place & time

Sages whose lives overlapped with Ambrose of Milan’s in the same cities, drawn from their recorded journeys.

Across the traditions

The world in their lifetime

Thinkers and teachers of other traditions whose lives overlapped with Ambrose of Milan’s — a glimpse of the wider world they lived in. Drawn purely from recorded birth and death years.

Works(9)