Silvio Valenti Gonzaga was an Italian nobleman and Catholic priest.

Gonzaga was born in Mantua

Mantua

Mantua is a city and comune in Lombardy, Italy and capital of the province of the same name. Mantua's historic power and influence under the Gonzaga family, made it one of the main artistic, cultural and notably musical hubs of Northern Italy and the country as a whole...

. He was elevated to the rank of cardinal in 1738 by Pope Clement XII

Pope Clement XII

Pope Clement XII , born Lorenzo Corsini, was Pope from 12 July 1730 to 6 February 1740.Born in Florence, the son of Bartolomeo Corsini, Marquis of Casigliano and his wife Isabella Strozzi, sister of the Duke of Bagnuolo, Corsini had been an aristocratic lawyer and financial manager under preceding...

. On the 15 May 1747 he was given the titular church of San Callisto

San Callisto

San Callisto is a Roman Catholic titular church in Rome, Italy, built over the site of Saint Pope Callistus I and the location of his martyrdom. The original building dates form the time of Pope Gregory III who order the building of a church on the site. The church has been rebuilt twice since,...

. He died in Viterbo

Viterbo

See also Viterbo, Texas and Viterbo UniversityViterbo is an ancient city and comune in the Lazio region of central Italy, the capital of the province of Viterbo. It is approximately 80 driving / 80 walking kilometers north of GRA on the Via Cassia, and it is surrounded by the Monti Cimini and...

.

He owned a large collection of painting (including the Portrait of Lorenzo Cybo

Portrait of Lorenzo Cybo

Portrait of Lorenzo Cybo is a painting by the Italian late Renaissance artist Parmigianino. It is housed in the Statens Museum for Kunst, Copenhagen, Denmark.-History:...

), which, after his death, was sold at Amsterdam and dispersed in several locations.