The excommunication of the Augustinian Martin Luther by Leo X
Leo X excommunicated Martin Luther in 1521, marking the beginning of the Protestant Reformation and a significant break in the Church
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Key points
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The name Leo - chosen by Robert Francis Prevost - was borne by no fewer than 13 popes before Leo XIV, the name chosen by the new pontiff, from the 5th century until the beginning of the 20th century.
This name, reminiscent of strength and majesty, has been adopted by some of the most influential pontiffs in the history of the Church.
The legacy of these popes spans more than 1,500 years and embraces eras of crisis, spiritual rebirth and profound political and religious transformations
Leo X (1513-1521), son of Lorenzo de' Medici
In particular, Leo X (pontiff from 1513 to 1521), son of Lorenzo de' Medici, represents the apex of the papal Renaissance.
Under his pontificate, Rome flourished artistically, but it was also the time when the Protestant Reformation exploded: in 1517 Martin Luther posted his 95 theses. Leo X excommunicated him in 1521.


