Julius II

 ''Julius II formerly known as Giuliano della Rovere (5 December 1443 – 21 February 1513) was the Pope from 1503 to 1513, and was the successor of Pius III, who's predecessor was Rodrigo Borgia. After becoming the officaly Pope in 1503, after the death of Pius III, he ordered a warrant for the arrest of Cesare Borgia, for the crimes of murder, betrayal, and incest.''

Trivia

 * In the novalization of Assassin's Creed: Brotherhood Pope Julius appears and tells Ezio Auditore of how he intends to revive Rome's former glory after Borgia's influence ended.