Taxation was an economic warfare waged simultaneously in two battlefronts: the battle for land ‘as source of wealth’ and the battle for labor ‘as cause of wealth.’ They were two sides of one single coin: an intra-class struggle for jurisdictions of rent rights and privileges. Episodes of this struggle might seem separated from one another, but they reveal changes in the whole of a class-based society. Above all, they reveal shifts in relations and structures that bonded together the upper class. These shifts were by no means sudden. Rather, they were small and localized quantitative changes that over the long run altered the foundations and relations that sustained the upper class. Roman juridical notions had survived throughout the early Middle Ages in the rise of the class of an imperial or free nobility. Bishop Wanga belonged to this class, and so did the Counts of Tyrol and other patrimonial families of the region. Dissolution of territorial jurisdiction of Merovingian monastic houses created the conditions for the rise of an imperial nobility that controlled the House of Canons of the Chapter of the Church of Trent.