John Frederick I, called the Magnanimous, was the Elector of Saxony and head of the Schmalkaldic League. Wikipedia
Born: June 30, 1503, Torgau, Torgau, Germany
Died: March 3, 1554 (age 50 years), Weimar, Germany
Parents: John, Elector of Saxony and Sophie of Mecklenburg
Great grandchildren: Ernest I, Duke of Saxe-Gotha, William, Duke of Saxe-Weimar, John Ernest I, Duke of Saxe-Weimar, and more
Great-grandparents: Frederick II, Elector of Saxony, Margaret of Austria, Electress of Saxony, Albert III, Duke of Bavaria, and more