Different magnates and clerical or secular entities (such as convents, cities) had alienated the prince-archiepiscopal revenues. Knights from families of nobility or ministerialis had usurped powerful positions in the Prince-Archbishopric. While Martin von der Hude terrorised the area between the rivers Weser and Oste, Heinrich von Borch, another robber baron, covered the area eastwards thereof until the river Elbe. In 1309 the city of Bremen, John III of Oldenburg-Delmenhorst and a number of knights confederated themselves to defeat Martin von der Hude.