Archduchess Maria of Austria was the daughter of Ferdinand I, Holy Roman Emperor from the House of Habsburg and Anna of Bohemia and Hungary.
She married William, Duke of Jülich-Cleves-Berg on 18 July 1546 as his second wife. Wikipedia
Born: May 15, 1531, Prague, Czechia
Died: December 11, 1581 (age 50 years), Hambach Castle, Neustadt, Germany
Grandchildren: Eleanor of Prussia, Magdalene Sibylle of Prussia, Wolfgang Wilhelm, Count Palatine of Neuburg, and more
Spouse: William, Duke of Jülich-Cleves-Berg (m. 1546–1581)
Siblings: Maximilian II, Holy Roman Emperor