Protestant Reformer Philipp Melanchthon dies. Although he spent most of his time teaching and writing, Philipp Melanchthon played a significant role in the theological debates between Protestants and Catholics.
Melanchthon was the primary author of the Augsburg Confession, a document which influences nearly every Protestant document which comes afterwards.
At the Diet of Augsburg Melanchthon represented the Reformation because Luther was already in exile. One important difference between Melanchthon and Luther is that the former always tried to avoid giving offense to Catholics when he presented his positions, something which was rarely the case with Luther.