Marianna sanguszko née Lubomirska (1693-1729) - introduction to the biography of the overlooked heiress to the entail of Ostrog

ENThe life of Marianna Sanguszko née Lubomirska has not been the subject of academic interest. Owner of a huge manor, sister of the owner of Ostrogski’s entail, sister of the Duchess of Neuburg, and finally the wife of Pawel Karol Sanguszko, a Court Marshal of the Grand Duchy of Lithuania, she never played a significant political role nonetheless. Little is known about her private life, activity and participation in the fight for the inheritance of the Entail of Ostrog. This paper is to determine the most important events which led directly to Marianna and her husband Paweł Karol Sanguszko acquiring the rights to selected properties. An in-depth analysis of the historical source material reveals the complexity of the fight for the right to the Entail of Ostrog. From the moment he married Marianna in 1710, Sanguszko was an important political player, consistently accomplishing his objectives. Thanks to his spouse and the support she showed him, firstly in a conflict with her brother Aleksander Dominik Lubomirski, and then with his opponents who tried to prove his wrongful activities, Sanguszko became the administrator of a huge estate in the 1720s. Marianna herself was not politically involved, with her lively and industrious spouse taking care of the prolonged court trials. The paper focuses on three important moments in her life, i.e. marriage, dowry conflict and political crisis after the death of her brother, Aleksander Dominik Lubomirski. Keywords: biography, Sanguszko Family, Ostrogski’s entail.