Cisalpine Gaul was the name given, especially during the 4th and 3rd centuries BC, to a region of land inhabited by Celts, corresponding to what is now most of northern Italy.
Detail of the Tabula Peutingeriana showing northern Italy between Augusta Pretoria (Aosta) and Placentia (Piacenza); the Insubres are marked as inhabiting the Po Valley upstream of Ticeno (Pavia) and downstream of the Trumpli and Mesiates which occupy the upper reaches of the Sesia and Agogna rivers.
Archaeological finds of Canegrate culture
Roman Italy is the period of ancient Italian history going from the founding and rise of Rome to the decline and fall of the Western Roman Empire; the Latin name of the Italian Peninsula in this perio
Cisalpine Gaul
…inhabited by Celts (Gauls), corresponding to what is now most of northern Italy. Since the late 3rd century BC, it was considered geographically part of Italia by the Roman Republic, but remained administratively separated until 42 BC. It was a Roman province from c. 81 BC until 42 BC, when it was de jure…
Northern and southern section of Italia under Augustus and successors
The Tropaeum Alpium, The Victory Monument of the Alps, La Turbie, France, marked the Augustan border between Italy and Gaul.
The "Kingdom of Italy" of Theodoric the Great in 535 AD