Valentine of Terni became bishop of which ancient Italian city?

Valentine of Terni became bishop of Interamna, the ancient Italian city now called Terni.

Interamna, more fully Interamna Nahars, was an Umbrian settlement in central Italy. It developed into modern Terni in the region of Umbria, and Valentine is traditionally remembered as one of the city’s early Christian bishops. His association with Terni remains central to the city’s religious identity.

Tradition says Valentine was born or based at Interamna and later traveled to Rome, where he was imprisoned and martyred. His remains are associated with the Basilica of Saint Valentine in Terni, although relic traditions surrounding him vary across Europe.

Readers sometimes confuse Interamna with the place of his death. The tradition places his martyrdom in Rome, but his episcopal see was Interamna. The name “Terni” is therefore the modern geographical answer, while “Interamna” is the historically precise answer expected by this question.