Frederick III , also known as Frederick the Wise , was Elector of Saxony from 1486 to his death. Frederick was the son of Ernest, Elector of Saxony and his wife Elisabeth, daughter of Albert III, Duke of Bavaria. He is notable as being one of the most powerful early defenders of Martin Luther, Lutheranism and the Protestant Reformation although he had little personal contact with Luther himself. Fredericks treasurer Degenhart Pfaffinger , spoke on behalf of him to Martin Luther. Pfaffinger supported Frederick since the joint pilgrimage to the holy land. He is considered to have remained a Roman Catholic all his life, yet gradually inclining toward doctrines of the Reformation.
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Source: Wikipedia