Martin Luther
Martin luther was a priest that nailed a list of complaints on the Catholics' door called the 95 theses. Because of Gutenberg's printing press numerous people were able to read them. Therefore spreading his theses all over, enraging the clergy. Once the 95 theses reached Pope Leo X he called martin luther a heretic and excommunicated him. But Martin's ideas had people thinking and Martin created his own religion, the protestants.