In 1180, under the rule of Władysław's II youngest son Konrad Spindleshanks, Głogów was rebuilt and became the residence of his principality, which fell back to the Duchy of Silesia upon his death about 1190. In the course of the fragmentation under Duke Bolesław II the Bald and his younger brother, the Duchy of Głogów under Duke Konrad I was established in 1251. Two years later he vested the town with Magdeburg rights.