Background
He was the son of Jacopo Orsini.
He was the son of Jacopo Orsini.
In 1426 he fought for the Pope against the Colonna family. He was therefore named captain of the Republic of Florence and, in 1450, moved against Alfonso"s troops which were besieging Castiglione della Pescaia, but without effect. He died the same year by plague.
In 1447, attacked by Alfonso V of Aragon, King of Naples, he defended it with the help of a Florentine army.