Acerno, is a town and comune in the province of Salerno in the region of Campania in south-western Italy. It lies within the Parco regionale Monti Picentini, a park of the Monti Picentini group in the Southern Apennines. The neighbouring municipalities are Giffoni Valle Piana, Montecorvino Rovella, Calabritto, Senerchia, Montella, the communal territory has an elevation varying between 400 and 1790 metres above sea level. Outside of the town itself it is uninhabited by humans. It is rich in flora, however, with forests of maple, oak, chestnut, hazel, beech and alder, while the fauna includes golden eagles, dormice, wild cats, otters and wolves. The town therefore acts as a base for excursions to the mountains Monte Cervialto, Monte Polveracchio, although Acerno does attract tourists, the economy is largely based on agriculture, especially sheep, cattle and pig farming, and cereal cultivation. Acerno was founded by refugees from Picentia, which had destroyed by the Romans after the Second Punic War. Around 1150, Guido da Acerno inherited the comune from his father Tommaso, on 17 August 1254, Pope Innocent IV granted Philip dAcerno possession of Acerno, Castronuovo and various feudal estates. In 1272 Charles I of Anjou granted Acerno to his eldest son Charles, in 1298 it fell under the ownership of Roger of Lauria and was later owned by William Vaccaro, Roberto Grillo, Francesco Guindazzo and Antonio de Muro. In 1453 a university for Acerno and Calabritto was built, in 1469, Troiano Santomango became lord of Acerno, Calabritto and Muro, and on 11 September 1500 reached a financial agreement with other feudal lords over taxes. The territory was inherited by his son, Camillo Colonna Marcello and he was succeeded by his son Pompeo, who in 1577 sold the land for 30,500 ducats to Diomedes, Marquis of Castiglione. Diomedes died on 2 October 1596 and was succeeded by his son Ascanio, in 1619 he loaned the lands under Royal Assent and after a series of owners, including Pompeo Colonna, in 1665 the estate fell into the hands of Antonio Tocco. Tocco died on 5 March 1678 and was succeeded by his nephew Charles, the Gascon family ran Acerno throughout much of the 18th century until 1777 when it was ceded to the Royal Court when Marquis Giuseppe Gascon, the last owner died without legitimate heirs. Girola Mascaro, President of the Royal House of Salermo was granted power of the territory in 1781 but with the end of feudalism in 1806, the Bishopric of Acerno dates back to the 11 or 12th century. The first bishop was named Pisano who was appointed in 1136, followed by Peter, Acerno lost its own bishopric in 1818 and today has been merged into the Roman Catholic Archdiocese of Salerno-Campagna-Acerno in its present form since 30 September 1986. The Germans then shelled the house of the canon, the priest escaped, the town was severely damaged in the 1980 Irpinia earthquake. The Cathedral of San Donato, built in 1444, has been destroyed, the interior has four paintings depicting the four Evangelists, the work of an artist called Pallas in 1797. The church of Our Lady of Grace, has an altar in polychrome marble, there is also the remains of the castle that belonged to Roger of Lauria
Pvt. Paul Oglesby, of the U.S. 30th Infantry, standing in reverence before an altar in a damaged Catholic Church in Acerno
The Italian 10th Engineer Battalion, 3rd Infantry Division on 12 September 1943 in Acerno repairing a bridge destroyed by the Germans.