Cymburgis of Masovia Archduchess by marriage of Styria, Carinthia and Carniola (1394–1429) Parents Alexandra of Lithuania Siemowit IV Children Ernst II von Habsburg Frederick III, Holy Roman Emperor Catherine of Austria Rudolf von Habsburg Anna von Habsburg Alexander von Habsburg Leopold von Habsburg Margaret of Austria Albert VI, Archduke of Austria Siblings Trojden II of Płock Jadwiga of Masovia Amelia of Masovia Casimir II of Masovia Catherine of Masovia Władysław I of Masovia Aleksander Mazowiecki Maria of Masovia Siemowit V of Masovia Euphemia of Masovia Anna of Masovia Partners Ernest, Duke of Austria
