Having come of age, Henry IV used petty southern German nobles and his ministeriales to recover some of the crown lands and rights that the lay princes and certain prelates had acquired during his minority, particularly in Saxony. His recovery operations went further, however, and a great belt of lands from the northern slopes of the Harz Mountains to the Thuringian Forest was secured and fortified under the supervision of his knights to form a royal territory, where the king and his court could reside. The southern German magnates were thus kept at a distance when Henry and his advisers struck at neighbouring Saxon princes such as Otto of Northeim and at the Billung family.
The storm broke in 1073. A group of Saxon nobles and prelates and the free peasantry of Eastphalia, who had borne the brunt of statute labour in the building of the royal strongholds, revolted against the regime of Henry’s Frankish and Swabian officials. To overcome this startling combination and to save his fortresses, the king needed the military strength of the southern German princes Rudolf of Rheinfelden, duke of Swabia; Welf IV, duke (as Welf I) of Bavaria; and Berthold of Zähringen, duke of Carinthia. Suspicious and hostile at heart, they took the field for him only when the Eastphalian peasantry committed outrages that shocked aristocrats everywhere. Their forces enabled Henry to defeat the Saxon rebellion at Homburg near Langensalza in June 1075. But, when the life-and-death struggle with Rome opened only half a year later, the southern German malcontents deserted Henry and, together with the Saxons and a handful of bishops, entered into an alliance with Gregory VII. Few of them at this time were converted to papal reform doctrines, but Gregory’s daring measures against the king gave them a chance to come to terms with one another and to justify a general revolt. The civil war against Henry IV
Although he intended to cooperate with Henry IV at the outset of his papacy, Gregory VII was drawn into a terrible conflict with the king because of Henry’s refusal to obey papal commands. Emboldened by his success in 1075 against the Saxons, Henry took a firm stand against Gregory in disputes over the appointment of the archbishop of Milan and a number of Henry’s advisers who had been excommunicated by the pope. At the synod of Worms in January 1076, Henry took the dramatic step of demanding that Gregory abdicate, and the German bishops renounced their allegiance to the pope. At his Lenten synod the following month, Gregory absolved all men from their oaths to Henry and solemnly excommunicated and deposed the king. The situation quickly became desperate for Henry, who both lost much support and faced a reinvigorated revolt. In October Gregory’s legates and leaders of the German opposition assembled at Tribur (modern Trebur, Germany) to decide the future of the king, who by this point had been abandoned by his last adherents. Gregory was then invited to attend a meeting at Augsburg the following February to mediate the situation. Henry hastened to meet Gregory at Canossa before the pope reached Augsburg, however, and appealed to him as a penitent sinner. Gregory had little choice but to forgive his rival and lifted the excommunication in January 1077. Despite Gregory’s reconciliation with Henry, the princes elected Rudolf of Rheinfelden king at a gathering in Forchheim in March.
The civil war that now broke out lasted almost 20 years. A majority of the bishops, most of Rhenish Franconia (the Salian homeland), and some important Bavarian and Swabian vassals sided with Henry. He thus held a geographically central position that separated his southern German from his Saxon enemies, who could not unite long enough to destroy him. With the death in battle of Rudolf of Rheinfelden in 1080 and the demise of another antiking, Hermann of Salm, in 1088, the war in Germany degenerated into a number of local conflicts over the possession of bishoprics and abbeys. Henry was also successful in the larger struggle with Gregory, invading Italy and forcing the pope from Rome in 1084. At that time, Henry elevated Wibert of Ravenna to the papal throne as the antipope Clement III, who then crowned Henry emperor.
The situation remained in flux throughout the rest of Henry’s reign. In 1093 Henry was nearly toppled by a revolt led by his son Conrad, and a revived papacy under Urban II challenged the legitimacy of Clement. In 1098 the tide turned again when Henry appointed his other son, Henry, as his heir and relations with the bishops and papacy improved. Ultimately, however, Henry’s reign was doomed to failure by one final revolt. Even his apparent triumph at Canossa was tempered by his loss of status as a divinely appointed ruler.
Throughout these years the crown, the churches, and the lay lords had to enfeoff more and more ministeriales in order to raise mounted warriors for their forces. Though this recruitment and frequent devastations strained the fortunes of many nobles, they recouped their losses by extorting fiefs from neighbouring bishoprics and abbeys. The divided German church thus bore the brunt of the costs of civil war, and it needed peace almost at any price. Henry V
The Salian dynasty and the rights for which it fought were saved because Henry IV’s son and heir himself seized the leadership of a last rising against his father (1105). This maneuver enabled Henry V (1106–25) to continue the struggle for the crown’s prerogative over the empire’s churches against the demands of the papacy. As the struggle continued, the princes became the arbiters and held the balance between their overlord and the pope. In 1122, acting as intermediaries and on behalf of the Reich, they reached the agreement known as the Concordat of Worms with the Holy See and its German spokesman, Archbishop Adalbert of Mainz, the bitter personal enemy of Henry V. By then, however, the princes had for the most part defeated efforts to restore royal rights in Saxony and to stem the swollen jurisdictions and territorial powers of the aristocracy elsewhere.
Henry V (left) receiving the imperial insignia from Pope Paschal II at Rome, April 13, 1111, illumination from a German manuscript, c. 1114-25; in the possession of Corpus Christi College, CambridgeCourtesy of the Master and Fellows of Corpus Christi College, Cambridge; photograph, The Conway Library, Courtauld Institute of Art, London
When Henry V, the last Salian, died childless in 1125, Germany was no longer the most effective political force in Europe. The brilliant conquest states of the Normans in England and Sicily and the patient, step-by-step labours of the French kings were achieving forms of government and concentrations of military and economic strength that the older and larger empire lacked. The papacy had dimmed the empire’s prestige and decreased the emperor’s power, and Rome became the true home of universalistic causes. When Pope Urban II preached the First Crusade in 1095, Henry IV, cut off and surrounded by enemies, was living obscurely in a corner of northern Italy. The Holy See, by its great appeal to the militant lay nobility of western Europe, thus won the initiative over the empire. At this critical moment the Reich also lost control in the Italian bishoprics and towns just when their population, trade, and industrial production were expanding quickly. Germany did not even benefit indirectly from the Crusaders’ triumphs, although some of their leaders (e.g., Godfrey of Bouillon and Robert II of Flanders) were vassals of the emperor. The civil wars renewed for a time the relative isolation of the central German regions.
Internally, the crown had saved something of the indispensable means of government in the control over the church; but it was a bare minimum, and its future was problematic. The ecclesiastical princes henceforth held only their temporal lands as imperial fiefs, for which they owed personal and material services. As feudatories of the empire, they came to represent the same interests toward it as did the lay princes; at least, their sense of a special obligation tended to weaken. The king’s jurisdiction continued to exist alongside and in competition with that of the local powers. The great tribal duchies survived as areas of separate customary law. Each developed differently, and the crown could not impose its rights on all alike or change the existing social order. The most tenacious defenders of this legal autonomy had been the Saxons; but it also prevailed in Swabia, where distinct territorial lordships grew fast.