Jean Cauvin, also Jean Calvin (John Calvin in English) (July 10, 1509 – May 27, 1564), was a French Protestant theologian during the Protestant Reformation and was a central developer of the system of Christian theology called Calvinism or Reformed theology. In Geneva, he rejected Papal authority, established a new scheme of civic and ecclesiastical governance. He is famous for his teachings and writings and infamous for his role in the execution of Michael Servetus.