Noun
Italian pope whose nepotism put the Borgia family in power in Italy (1378-1458)
Source: WordNetArano Cybo was a senator in Rome under Pope Calixtus III (1455–58). Source: Internet
In November 1463, Pope Pius II tried to organize the crusade against the Ottomans, similar to what Pope Nicholas V and Pope Calixtus III had tried to do before him. Source: Internet