Historical Todi was founded by the ancient Italic people of the Umbri, in the 8th-7th century BC, with the name of Tutere. The name means "border", being the city located on the frontier with the Etruscan dominions. It probably was still under the latter's influence when it was conquered by the Romans in 217 BC. According to Silius Italicus, it had a double line of walls that stopped Hannibal himself after his victory at the Trasimeno. In most Latin texts, the name of the town took the form Tuder.