 While Władysław now ruled over Brześć Kujawski and Sieradz, Casimir II inherited the duchy of Łęczyca, and Siemowit assumed control of the land of Dobrzyń.The death of Leszek initiated a struggle for supremacy in the duchies of Krakow and Sandomierz; the main candidates were Bolesław II, Duke of Mazovia, and Henry IV Probus, Duke of Wrocław.In this contest, Władysław decided to support the former.