Johann Wilhelm was a duke of Saxe-Weimar. Wikipedia
Born: March 11, 1530, Torgau, Torgau, Germany
Died: March 2, 1573 (age 42 years), Weimar, Germany
Parents: John Frederick I and Sibylle of Cleves
Great-grandparents: Ernest, Elector of Saxony, Sibylle of Brandenburg, Matilda of Hesse, and more
Grandchildren: William, Duke of Saxe-Weimar, Ernest I, Duke of Saxe-Gotha, John Ernest I, Duke of Saxe-Weimar, and more
Grandparents: John, Elector of Saxony, John III, Duke of Cleves, Maria of Jülich-Berg, and more