The House of Colonna is a prominent Italian family, forming part of the papal nobility. It played a pivotal role in medieval and Renaissance Rome, supplying one pope (Martin V), 23 cardinals and many other church and political leaders. Other notable family members are Vittoria Colonna, close friend of Michelangelo, Marcantonio II Colonna (Marcantonio Colonna), leader of the papal fleet in the Battle of Lepanto (1571) and Costanza Colonna, patron and protector of Caravaggio. The family was notable for its bitter feud with the Orsini family over their influence in Rome, which was eventually settled by the issuing of the papal bull Pax Romana by Pope Julius II in 1511. In 1571, the heads of both families married nieces of Pope Sixtus V. Thereafter, historians recorded that "no peace had been concluded between the princes of Christendom, in which they had not been included by name". Today, the family is led by Don Prospero Colonna (b.1956).
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Colonna family in the context of Pope Eugene IV
Pope Eugene IV (Latin: Eugenius IV; Italian: Eugenio IV; 1383 – 23 February 1447), born Gabriele Condulmer, was head of the Catholic Church and ruler of the Papal States from 11 March 1431 to his death in February 1447. Condulmer was a Venetian, and a nephew of Pope Gregory XII. In 1431, he was elected pope.
His tenure was marked by conflict: first with the Colonna, relatives of his predecessor Pope Martin V; and later with the Conciliar movement. In 1434, after a complaint by bishop of the Canary Islands Fernando Calvetos, Eugene IV issued the bull "Creator Omnium", rescinding any recognition of Portugal's right to conquer the islands, and rescinding any right to Christianize their native populations. Eugene also resisted slavery: he excommunicated anyone who had enslaved newly-converted Christians, such penalty to remain in place until the enslaved were restored to their liberty and possessions. Eugene initially sought to protect the Jews, and was quite active against a rampant societal anti-semitism—he issued decrees protecting their rights, opposing forced baptisms, and permitting wider economic activity. In 1442, however, he promulgated the bull Dudum ad nostram audientiam, which was later used as the legal basis for the creation of Jewish ghettos in Europe. In 1443, Eugene decided to take a neutral position on territorial disputes between Castile and Portugal and regarding rights claimed along the coast of Africa.