This man's ambitions were foiled when Cardinal della Rovere became the "warrior pope" Â– Julius II.
This man quelled one revolt against his power by inviting his rivals to negotiate, only to have them imprisoned and strangled in the castle of Senigallia. Late in life, this leader served as a commander for King John III of Navarre in Spain, as this man's capture by his former subordinate Gian Paolo Baglioni resulted in the loss of his possessions. At the height of his power, this man was assisted by the condottieri Vietellozzo Vitelli and the Orsini brothers. Though he became a bishop at age 16, this opponent of the Colonna family became the first known person to resign from being a cardinal. This man engineered the election of Pope Pius III, and may have attained his first command by drowning his brother Juan. This man's ambitions were foiled when Cardinal della Rovere became the "warrior pope" Â– Julius II. For 10 points, name this man who served as the alleged inspiration for Machiavelli's Prince, the son of Pope Alexander VI and brother of Lucretia.
This man quelled one revolt against his power by inviting his rivals to negotiate, only to have them imprisoned and strangled in the castle of Senigallia.
Cesare Borgia [prompt on Borgia]