Born in Venice, he was one of the founders of the Congregation of the Augustinian Canons Regular of S. Giorgio in Alga in his native city of Venice. In 1405 he was named bishop of Modon, but two years later his uncle Gregory XII transferred him to the see of Bologna. He could not take possession of the latter see due to opposition of Cardinal Baldassare Cossa (later Antipope John XXIII), who did not recognised his nomination, because he considered Gregory XII as antipope. On May 9 1408 he was created Cardinal Priest of S. Pietro in Vincoli by his uncle. He was also administrator of Fiesolo (1408-10) and Latin Patriarch of Constantinople (1408-09). Camerlengo of the Holy Roman Church from July 1412 until July 1415. He attended the Council of Constance as representative of the Roman Obedience of the Sacred College. Bishop of Porto e Santa Rufina from May 1409 until July 1415, when he resigned in favor of his uncle, who abdicated the Papacy at that time. After his death in October 1417, he was appointed to that suburbicarian see again. He participated in the Papal conclave, 1417. Archpriest of the patriarchal Vatican Basilica 1420-1434. He served also as papal legate in Perugia (1425) and in Tuscany (1431). Administrator of the sees of Cittanova (1420-21), Rimini (1435) and Cervia (1435-40). He participated in the Papal conclave, 1431. New pope Eugene IV (his cousin) transferred him to the suburbicarian see of Ostia e Velletri on March 14, 1431. He became Dean of the Sacred College of Cardinals at the death of Giordano Orsini on May 29 1438. Author of an unpublished history of his times. He died at Padua, but his remains were transferred to Venice and buried in the church of S. Giorgio in Alga.