Pope Leo X

Pope Leo X, born Giovanni di Lorenzo de' Medici (11 December 1475 –  1 December 1521) was Pope from 1513 to his death. He is known primarily for his papal bull against Martin Luther and subsequent failure to stem the Protestant Reformation, which began during his reign when Martin Luther (1483–1546) published  the 95 Theses and nailed them to the door of the Castle Church in Wittenberg. He was the second son of Lorenzo de' Medici, the most famous ruler of the Florentine Republic, and Clarice Orsini. His cousin, Giulio di Giuliano de' Medici, would later succeed him as Pope Clement VII (1523–34). The remark "It has served us well, this myth of Christ" is often attributed to him, despite the fact that it first appears in John Bale's fiercely antipapal treatise The Pageant of the Popes.
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