[1] Under Pope Eugene IV, he became provost of the Augustinian Abbey of San Martín Ça Costa in Girona.
[1] Following the election of Pope Nicholas V in 1447, Margarit resigned his offices in Girona in order to again try to gain an entry to the papal court.
[1] On January 12, 1460, John II of Aragon recommended that the pope make Bishop Margarit a cardinal.
[1] Instead, Pope Pius II named him nuncio to the Kingdom of Aragon, charged with a double mission: (1) reconciling the king with his estranged son, Charles, Prince of Viana; and (2) promoting a crusade against the Ottoman Empire to retake the Kingdom of Cyprus and restore the dethroned Charlotte of Cyprus.
[1] Following the end of the Catalan Civil War in 1472, John II attempted to convince the pope to make Bishop Margarit a cardinal, again unsuccessfully.
[1] In 1481, Ferdinand II despatched him to the Republic of Venice to dissuade the Venetians from continuing to have trading relations with the Ottoman Empire.
The pope was about to abandon the Venetian cause when the intervention of the Catholic Monarchs and Bishop Margarit were able to secure a peace treaty.
[1] In gratitude for Bishop Margarit's service with the Venetians, Pope Sixtus IV finally made him a cardinal priest in the consistory celebrated in St. Peter's Basilica on November 15, 1483.