Elizabeth of Austria (1526–1545)

Elizabeth of Austria was Queen of Poland and Grand Duchess of Lithuania by marriage. She was the eldest of fifteen children of Ferdinand I, Holy Roman Emperor, and his wife Anne of Bohemia and Hungary. A member of the House of Habsburg, she was married to Sigismund II Augustus, who was already crowned as King of Poland and Grand Duke of Lithuania even though both of his parents were still alive and well. The marriage was short and unhappy. Elizabeth was of frail health, experiencing epileptic seizures, and died at age 18.