Sapieżyńska ochrona dóbr Potockich w starostwie owruckim w latach 80. i 90. XVII wieku Przyczynek do badań nad współpracą rodzin magnackich w czasach panowania Jana III Sobieskiego

ENThe Sapiehas and the Potockis were amongst the most influential families of the Polish‑Lithuanian Commonwealth. The latter family owned numerous estates in Ukraine, which were directly under threat from marching Lithuanian soldiers. Kazimierz Jan Sapieha, Grand Hetman of Lithuania was in charge of the said estates. Due to cooperation of the two magnate families, he attempted to shield the Potockis’ estates and possessions from Lithuanian troops marching to or returning from the war with Turkey. To that aim he utilised legal proclamations called Universals. The Potockis returned the favour by entering into political collaboration. Hetman Kazimierz Jan Sapieha, having been absent from the Siege of Vienna, had to incur accusations and attacks during Sejm proceedings. He was then (1684) defended in a propaganda letter by Andrzej Potocki, Castellan of Kraków. The research themes analysed in the article serve as both, an introductory outline and a voice in the discussion regarding cooperation of Lithuanian and Polish noble families in the second half of the 17th century.