Catherine of Austria, Queen of Poland and Grand Duchess of Lithuania, by Titian, 1548-49

Catherine of Austria (15 or 25 September 1533 – 28 February 1572) was one of the fifteen children of Ferdinand I, Holy Roman Emperor and Anna of Bohemia and Hungary. In 1553, she married Polish King Sigismund II Augustus and became Queen consort of Poland and Grand Duchess consort of Lithuania. Their marriage was not happy and they had no issue. After a likely miscarriage in 1554 and a bout of illness in 1558, Sigismund became increasingly distant. He tried but failed to obtain a divorce from the pope. In 1565, Catherine returned to Austria and lived in Linz until her death. Sigismund died just a few months after her bringing the Jagiellon dynasty to its end.