Orsini Family - Monterotondo Line

Monterotondo Line

This line was founded by Rinaldo, third son of Matteo Rosso the Great. His son, Napoleone, became a cardinal in 1288 and remained a prominent member of the Curia until his death at Avignon in 1342.

This branch of the family was often involved in the baronal struggles of the Late Middle Ages Rome, at least three members of the family being elected as Senators, while others foughts as condottieri. Francesco in 1370 took part to the war of Florence against the Visconti of Milan. Orso (died July 24, 1424) died fighting for the king of Naples in the Battle of Zagonara against the Milanese. His sons Giacomo (died 1482) and Lorenzo (1452) battled for the Papal States, Naples and Florence. One of Giacomo's daughters, Clarice (1453–July 30, 1488) became Lorenzo de' Medici's wife. Franciotto Orsini was created cardinal by Leo X in 1517.

The most important member of the Monterotondo Orsinis was Giovani Battista Orsini, who became cardinal under Sixtus IV (1483). He was probably among the promoters of the failed plot against Cesare Borgia in 1502, being assassinated as retaliation, together with numerous members of the family.

The line decayed from the late 16th century, when several members were assassinated or lost their lands for various reasons. Its last representants Enrico (died September 12, 1643) and Francesco (1592 - September 21, 1650) sold Monterotondo to the Barberini in 1641.