on the descriptio Italiae, "division of Italy", made by Augustus. The Regio Sexta ("6th Region") is called Umbria complexa agrumque Gallicam citra Ariminium ("Umbria including the Gallic country this side of Rimini").

Umbria is named after an Italic people, the Umbri, who were gradually subjugated by the Romans in the 4th through the 2nd centuries BC. Although it passed the name on to the modern region