another election for Borgia to manipulate to his advantage. Borgia was wealthy and powerful enough to mount a bid, but he faced competition from Giuliano della Rovere, the late pope's nephew. Della Rovere's faction had the advantage of being incredibly large as Sixtus had appointed many of the cardinals who would participate in the election. Borgia's attempts to gather enough votes included bribery and leveraging his close ties to Naples and Aragon. However, many of the Spanish cardinals were absent from the conclave and della Rovere's faction had an overwhelming advantage. Della Rovere chose to promote Cardinal Cibo as his preferred candidate, and Cibo wrote to the Borgia faction wanting to strike a deal. Once again, Borgia played kingmaker and conceded to Cardinal Cibo who became Pope Innocent VIII. Again, Borgia retained his position of vice-chancellor, successfully holding this position over the course of five papacies and four elections. In 1485, Pope Innocent VIII nominated Borgia to become the Archbishop of Seville, a position that King Ferdinand II wanted for his own son. In response, Ferdinand angrily seized the Borgia estates in Aragon and imprisoned Borgia's son Pedro Luis. However, Borgia healed the relationship by turning down this appointment. Pope Innocent, at the urging of his close ally Giuliano della Rovere, decided to declare war against Naples, but Milan, Florence, and Aragon chose to support Naples over the pope. Borgia led the opposition within the College of Cardinals to this war, and King Ferdinand rewarded Borgia by making his son Pedro Luis the Duke of Gandia and arranging a marriage between his cousin Maria Enriquez and the new duke. Now, the Borgia family was directly tied to the royal families of Spain and Naples. While Borgia gained the favour of Spain, he stood opposed to the pope and the della Rovere family. As a part of his war opposition, Borgia sought to obstruct an alliance negotiation between the papacy and France. These negotiations were unsuccessful and in July 1486, the pope capitulated and ended the war. In 1488, Borgia's son Pedro Luis died, and Juan Borgia became the new duke of Gandia. In the following year, Borgia hosted the wedding ceremony between Orsino Orsini and Giulia Farnese, and within a few months, Farnese had become Borgia's new mistress. She was 15, and he was 58. Borgia continued to acquire new benefices with their large streams of income, including the bishopric