 From 1300 they took up residence in Schloss Borbeck, where they spent increasing amounts of time.The abbey's territorial lordship, to which belonged the town of Essen that was centered on the monastery, grew up between the Emscher and the Ruhr, The town's efforts to become an independent Imperial city were frustrated by the abbey in 1399 and again, conclusively, in 1670.In the north of the territory was located the abbey's monastery of Stoppenberg, founded in 1073; to the south was the collegiate foundation of Rellinghausen.