Setia (mod. Sezze, 52 m. by rail S.E. of Rome), an ancient town of Latium (adjectum), Italy, on the south-west edge of the Volscian mountains, overlooking the Pomptine Marshes, 1047 ft. above sea-level, and over 900 ft. above the plain. It was an ancient Volscian town, a member of the Latin league of 499 B.C., which became a Latin colony in 382 B.C., and, owing to the strength of its position as a frontier fortress, is frequently mentioned in the military history of Rome up to the time of Sulla, by whom it was captured in 82 B.C. Under the empire it was well known for its wine, which Augustus preferred even to Falernian. Considerable remains of the city walls exist, built of large blocks of limestone in the polygonal style. This style may also be seen in several terrace walls belonging to a later date, as is indicated by the careful jointing and bossing of the blocks of which they are composed. Such intentional archaism is by no means uncommon in the neighbourhood of Rome. The modern town, occupying the ancient site, is an episcopal see, with a muchrestored 13th-century Gothic cathedral. Pop. (1901) 6944 (town), 10,827 (commune). At the foot of the hill on which the town stands are considerable remains of Roman villas. (T. As.) 1 A. Jeremias, Das A. T. im Lichte des alten Orients, p. 118. ' Encycl. Biblica, " Seth," "Egypt." E. Meyer, Die Israeliten and ihre Nachbarsteimme, p. 219.