Sutri  Sutri (Latin "Sutrium") is an Ancient town, modern "comune" and former bishopric (now a Latin titular see) in the province of Viterbo, about from Rome and about south of Viterbo. It is picturesquely situated on a narrow tuff hill, surrounded by ravines, a narrow neck on the west alone connecting it with the surrounding country. The modern "comune" of Sutri has a few more than 5,000 inhabitants. Its ancient remains are a major draw for tourism: a Roman amphitheatre excavated in the tuff rock, an Etruscan necropolis with dozens of rock-cut tombs, a Mithraeum incorporated in the crypt of its church of the Madonna del Parto, a Romanesque Duomo. Ancient Sutrium occupied an important position, commanding as it did the road into Etruria, the later Via Cassia: Livy describes it as one of the keys of Etruria, nearby Nepi being the other. It came into the hands of Rome after the fall of Veii, and a Latin colony was founded there; it was lost again in 386 BC, but was recovered and recolonized around 383 BC. It was besieged by the Etruscans in 311–310 BC, but not taken. With Nepi and ten other Latin colonies it refused further help in the Second Punic War in 209 BC. Its importance as a fortress explains, according to Festus, the proverb "Sutrium ire", of one who goes on important business, as it occurs in Plautus. It is mentioned in. the war of 41 BC, and received a colony of veterans under the triumviri ("Colonia coniuncta lulia Sutrina"). Inscriptions show that it was a place of some importance under the empire, and it is mentioned as occupied by the Lombards. Sutri retained its strategic importance as a fortified place near the borders of the Duchy of Rome. The Donation of Sutri was an agreement reached at Sutri between the Lombard king Liutprand the Lombard and Pope Gregory II in 728. At Sutri the two reached an agreement, by which Sutri and some hill towns in Latium (see Vetralla) were given to the Papacy, "as a gift to the blessed Apostles Peter and Paul" according to the "Liber Pontificalis". The pact formed the first extension of Papal territory beyond the confines of the Duchy of Rome.