In 1007, however, Emperor Henry II presented it to his newly founded Prince-Bishopric of Bamberg. Whilst situated within the Ortenauer Reichslandvogtei, under the protection of Rudolph of Habsburg (1273–91), the territory's protectors were an array of local lords: the Zähringen were followed in 1218 by the Staufendukes of Swabia and in 1245 by the bishops of Strasbourg until the 1550s. These Vögte and confirmations of their rights — both Papal (1139, 1235, 1252, 1287) and Imperial (1309, 1331, 1516) — ensured the Abbey's continual independence.
Zell am Harmersbach was settled on territory owned by Gengenbach Abbey. During the 13th and 14th centuries, the abbey was instrumental in developing the town of Gengenbach to economic maturity. The abbey avoided further monastic reforms, and although in danger of suppression during the Reformation, survived that too. In 1525, Wilhelm von Fürstenberg and some town councilors sought to have the abbey dissolved. They too the abbot and some monks into custody, but nothing came of it.[4]
In 1575 and 1580, the abbey applied for membership of the Imperial College of Prelates but was refused, due to concern about its Imperial immediacy and Vogtei; membership was eventually approved in 1645 but this approval was not implemented until 1751. The abbey was mediatized in the wake of the German Mediatisation of 1803, and shortly afterwards its territories were absorbed into the state of Baden. However, the abbey was left to function under the last abbot until 1807 when the Grand Duke ordered it secularized.[5] By 1904 a normal school was in operation on the premises.[6]
Buhlmann, M., 2004. Benediktinisches Mönchtum im mittelalterlichen Schwarzwald. Ein Lexikon. Vortrag beim Schwarzwaldverein St. Georgen e.V., beim Verein für Heimatgeschichte St. Georgen und bei den St. Georgener Klosterspuren 2004. St. Georgen im Schwarzwald, 10. November 2004 (= Vertex Alemanniae, H.10)
Kähni, O., and John, H., (eds) 1980. Gengenbach in Handbuch der historischen Stätten Deutschlands, Bd.6: Baden-Württemberg, ed. Max Miller and Gerhard Taddey, 2nd ed., pp. 247f. Stuttgart: Kröner Tb 276.
Hitzfeld, K., (ed.), 1976. Gengenbach, in Die Benediktinerklöster in Baden-Württemberg, ed. F. Quarthal (= Germania Benedictina, vol.5), pp. 228–242. Ottobeuren.