Luigi Mattei

Luigi Mattei (died 1675) was an Italian military General and Marquis de Belmonte. During the 17th century he commanded troops loyal to the papal armies of Barberini Pope Urban VIII and Pamphili Pope Innocent X during the Wars of Castro.

Mattei was the second son of Asdrubale Mattei, Marquis di Giove, of the House of Mattei and his wife Costanza Gonzaga of the House of Gonzaga. His older brother, Girolamo Mattei, became Duca di Giove. He was the nephew of Ciriaco Mattei and Cardinal Girolamo Mattei.

He is variously described as Baron Mattei, a Papal Marquis and Papal Army Field Marshal. It is more likely, though, that he was simply a skilled military leader (militia leader) loyal to the papacy of Pope Urban VIII and then later Pope Innocent X.

During the late 1630s, Pope Urban and his Barberini nephews came into conflict with the Farnese Dukes of Parma sparking the conflict known as the First War of Castro. In 1641, Mattei was appointed Lieutenant General of the papal armies and was accordingly given a monthly salary of 343 scudi. On 12 October he led 12,000 infantry and 3,000 cavalry against the fortified town of Castro which was under the control of the Farnese. Though it is estimated that the Farnese had amassed a similarly sized army, Mattei's forces were met with very little resistance and the town was forced to surrender. Mattei's victory at Castro was immortalised in song by Marco Marazzoli.

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