 Rottenburg became the seat of a Catholic bishop as late as 1821–1828, when, after the secularisation and the Napoleonic Wars, a reorganisation of Catholic life in southwest Germany had become necessary.It was then decided not to choose the more important nearby places of Stuttgart or Tübingen as a diocesan town, as these were firmly Protestant.Rottenburg is known among Anabaptists as the place of death for Michael Sattler, a former monk who was involved in missionary activities in the Rottenburg and Horb am Neckar region.