sentences:  Jan was killed in 1513 and Zator was united with Poland.At the General sejm of 1564, King Sigismund II Augustus issued privileges of incorporation recognizing both Duchies of Oświęcim and Zator as part of the Polish Crown into the Silesian County of the Kraków Voivodeship, although the Polish kings retained both ducal titles and the name of the Duchy survived in the legal acts (it had however no special privileges).The lands of the former Duchy became part of the Habsburg Monarchy after the First Partition of Poland in 1772.