 After Henry's overthrow, it came into the possession of Count Simon of Tecklenburg and his descendants, though it was the source of many conflicts with the bishops.In 1236 the Count of Tecklenburg was forced to renounce all jurisdiction over the town of Osnabrück, as well as the lands of the see, the chapter and the parish churches.On the other hand, the bishop and chapter, from the 13th century on, expanded their jurisdiction over many convents, churches and hamlets.