On 27 February 1670, the sixteen-year-old Archduchess Eleonora Maria Josefa married Michael Wisniowiecki, King of Poland. The four years she spent in Poland were very difficult for her. Her husband had neither physical nor mental strength, was mostly not accepted by his peers while at one time opponents branded him openly as a homosexual and others as being impotent. Very seldom did she get involved with the arguments of the different nobility parties. She was aware of her husband's troubles but she kept her dignity. In 1673 after her husband died, she remained in Poland until Sobieski was elected King of Poland and returned home to Austria. 
Her brother, Emperor Leopold I, granted her permission to marry her true love, Karl IV Leopold, Duke of Lorraine, and, on 6 February 1678 in Wiener Neustadt, they were married. Karl was appointed Statthalter of Tirol and Vorderoesterreich, and the young couple resided in Innsbruck where their children were born. Later on, Karl defeated the Turks. 
In 1690 her husband died and the energetic Eleonora Maria Josefa, Duchess of Lorraine, tried to fulfil the last wishes of her husband by putting all her energy into the return of Lorraine to her children. At the German Reichstag in Regensburg she presented an offer for the restoration of Lorraine and established the rights of her eldest son, Leopold Joseph. In 1697 at the Treaty of Rijswijk she achieved her aims. However, the King of France kept the right of free military 
passage through Lorraine which weakened the souverainty of the state. 
However, only a few weeks after the peace conference at Rijswijk, Eleonora died in Vienna never having set foot in Lorraine. 
 

Source: Leo van de Pas