The city thus became the seat of the prefecture of Pô department until the fall of Napoleon in 1814, when the Kingdom of Piedmont-Sardinia was restored with Turin as its capital.
After the marriage of Adelaide of Susa with Humbert Biancamano's son Otto, the family of the Counts of Savoy gained control.
Both Livy mention the Taurini's country as including one of the passes of the Alps, which points to a wider use of the name in earlier times.
In the 1st century BC (probably 28 BC), the Romans created a military camp (Castra Taurinorum), later dedicated to Augustus (Augusta Taurinorum).
Turin reached about 5,000 inhabitants at the time, all living inside the high city walls.
After the fall of the Western Roman Empire, the town was conquered by the Heruli and the Ostrogoths, recaptured by the Romans, but then conquered again by the Lombards and then the Franks of Charlemagne (773).