Ursula Katharina of Altenbockum

Ursula Katharina of Altenbockum, divorced Lubomirska, married von Württemberg-Winnental (Polish: Urszula Katarzyna Lubomirska z domu Bokum; 25 November 1680 – 4 May 1743), later Imperial Princess of Teschen (German: Reichsfürstin von Teschen), was a Polish-German noblewoman and mistress of Augustus II the Strong, King of Poland and Elector of Saxony. In 1722 she married Prince Frederick Louis of Württemberg-Winnental.

She was the youngest daughter of the Truchsess (seneschal) of Lithuania Johann Heinrich von Altenbockum by his wife, Konstancja Tekla Branicka, who had emigrated from Westphalia.

In 1695, fifteen-year-old Ursula married the Polish Kronoberkaemmerer Prince Jerzy Dominik Lubomirski. At that time, the Lubomirski family ranked among Poland's most influential princely families. They maintained relations with Primate-Cardinal Michał Stefan Radziejowski, archbishop of Gniezno, who, after the death of the Polish king John III Sobieski, was chosen by the new king as his representative. Nevertheless, the Pope soon took the highly unusual step of dissolving this "lucky little marriage".

Around the end of the century, August the Strong, Elector of Saxony and since 1697 King of Poland, had met the vivacious and beautiful Princess Lubomirska, and after the dissolution of her marriage, he used Ursula's relations with the Cardinal-Primate to meet her.

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