Pope Leo X is known for his extravagant lifestyle, patronage of the arts (including Michelangelo and Raphael), and his involvement in the events leading up to the Protestant Reformation, notably excommunicating Martin Luther in 1521. Birth name: Giovanni di Lorenzo de' Medici Nationality: Papal States Born: December 20, 1475 Died: December 11, 1521 Pontificate: March 29, 1513 – December 11, 1521