In the controversy with the Orsinis, he was accused of treason by Pope Sixtus IV and was held in Castel Sant'Angelo together with Cardinal Giovanni Colonna.
Among these public figures were Philippe de Cabassoles, bishop of Cavaillon; Cola di Rienzo, a political leader; Francesco Nelli, secretary to the bishop Angelo Acciaioli I; Niccola di Capoccia, a cardinal; Lapo da Castiglionchio of Florence; Rinaldo Cavalchini, the son of the notary Oliviero; Stefano Colonna the Elder, the son of Giovanni Colonna who was one of the most important political figures in Rome; and Ildebrandino Conti, a bishop of Padua.
Stefano Colonna the Elder (1265 - c. 1348) was son of Giovanni Colonna and one of the most important political figures in Rome in the first half of the 14th century.
Don Giovanni | Giovanni Pierluigi da Palestrina | Giovanni Bellini | Giovanni Riggi | Giovanni Boccaccio | Giovanni Battista Pergolesi | Giovanni Battista Tiepolo | Giovanni Battista Guarini | Giovanni | Giovanni Trapattoni | Giovanni "John the Eagle" Riggi | Giovanni Gabrieli | Colonna family | Giovanni Falcone | Villa San Giovanni | San Giovanni in Persiceto | Giovanni Verga | Giovanni van Bronckhorst | Giovanni Tamagno | Giovanni Pacini | Giovanni Battista Pescetti | Giovanni Papini | Giovanni Hidalgo | Giovanni Domenico Cassini | Giovanni de' Medici | Giovanni Bottesini | Giovanni Battista Riccioli | Giovanni Zenatello | Giovanni Visconti | Giovanni Schiaparelli |