SARNO (anc. Sarnus)  , a town of Campania, Italy, in the province of Salerno, 15 M . N.E. from that city and 30 M . E. of Naples by the main railway . Pop . (1901) 15,130 (town), 19,192 (commune) . It lies at the foot of the Apennines, 92 ft. above sea-level, near the sources of the Sarno (anc . Sarnus), a stream connected by canal with Pompeii and the sea . Sarno has the ruins of a medieval castle, which belonged to Count Francesco Coppola, who took an important part in the conspiracy of the barons against Ferdinand of Aragon in 1485 . Walter of Brienne is buried in the ancient church of S . Maria della Foce rebuilt in 1701 . Paper, cotton, silk, linen and hemp are manufactured . The travertine which forms round the springs of the Sarno was used even at Pompeii as building material .

Before its

incorporation with the domains of the crown of Naples Sarno gave its name to a countship held in succession by the Orsini, Cappola, Suttavilla and Colonna families .