- Germany from 1250 to 1493
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In the other great field of German expansion in the 12th century—Lombardy and central Italy—the emperors and their military following alone counted. Indeed, from the very start of his reign, Frederick Barbarossa sought to recover and exploit regalian and imperial rights over the growing Lombard city communes and the rest of Italy. The connection between the German crown, the empire, and dominion over Italy has sometimes been regarded as a disaster for Germany and the ever-increasing concern of the Hohenstaufen dynasty with the south as its most tragic phase. Although Frederick’s policy was opportunistic, it was motivated by political necessity and personal inclination. Having bought off the Welfs, reconciled other great families with yet more concessions, and lastly endowed his own cousin, Conrad III’s son Frederick, with Hohenstaufen demesnes in Swabia, he had to try to mobilize their goodwill toward the empire while it lasted. He now aimed to set up a regime of imperial officials and captains who were to exact dues and to control jurisdiction that the communes had usurped from the failing grasp of their bishops. In 1158, as part of this plan, Frederick made his second Italian expedition and conquered Milan, the preeminent city in Lombardy. This was followed by an assembly and the publication of the Roncaglia decrees, which defined royal rights and attempted to establish Frederick’s authority in Italy.
For the Hohenstaufen ministeriales the rule of their masters in northern and central Italy provided a career. Because they could be deployed continuously, they became the backbone of the imperial occupation. A handful of minor dynasts also served Frederick for many years in the powerful and profitable commands that he established. The German bishops and certain abbots still had to supply men and money, and some of them threw themselves wholeheartedly into the war: for instance, Rainald of Dassel and Philip of Heinsberg, archbishops of Cologne from 1159 to 1167 and from 1167 to 1191, respectively, as archchancellors for Italy, had a vested interest in it. The support of the lay princes, conversely, was fitful and sporadic. Even at critical moments they could not be counted on, unless they individually agreed to serve or to send their much-needed contingents for a season. The refusal of the greatest of them, Henry the Lion, in 1176 brought about the emperor’s defeat at the Battle of Legnano and spoiled many years’ efforts in Lombardy.