Biography:Best remembered for granting indulgences for those who donated to reconstruct St. Peter's Basilica, which practice was challenged by Martin Luther's 95 Theses.
Lex X did not take seriously the array of demands for church reform and thus they quickly grew into the Protestant Reformation.
1514-01-14 Pope Leo X issues a papal bull against slavery
1515-09-13 First day of two-day Battle of Marignano: Francis I's French army defeats Swiss army force near Milan
1517-03-16 Pope Leo X signs 5th Council of Lateranen
1521-01-03Martin Luther is excommunicated by Pope Leo X from the Roman Catholic Church for failing to recant parts of his Ninety-five Theses which started the Protestant Reformation
Gregory XIII
Julius III
Paul VI
Pius VII
Pius XII
Pope Francis