Thus at the age of fifty-three perished this extraordinary man, a martyr to what he deemed to be his duty, the preservation of the immunities of the Church. The moment of his death was the triumph of his cause. His personal virtues and exalted station, the dignity and composure with which he met his fate, the sacredness of the place where the murder was perpetrated, all contributed to inspire men with horror for his enemies and veneration for his character. The advocates of the "customs" were silenced. Those who had been eager to condemn, were now the foremost to applaud, his conduct; and his bitterest foes sought to remove from themselves the odium of having been his persecutors. The cause of the Church again flourished: its liberties seemed to derive new life and additional vigor from the blood of their champion.
THE PEACE OF CONSTANCE SECURES THE LIBERTIES OF THE LOMBARD CITIES
Frederick, Duke of Swabia, and his brother Conrad, Duke of the Franks, grandsons of Henry IV, were the hereditary and dynastic successors to the throne of Germany, when with the death of Henry V in 1125 the male line of the Franconian dynasty ended. The brothers demanded the assertion of the elective right in the imperial office, and Lothair, Duke of Saxony, was elected emperor of Germany.
Lothair died in 1138. His son-in-law, the Wolf or Welf nobleman, Henry the Proud, Duke of Bavaria, whom Lothair had nominated as his successor, was opposed by the Swabian faction--also known as the Waiblingen faction--from the Franconian village in which the Swabian duke Frederick was born.
The Waiblingen faction elected as emperor of Germany Conrad the Crusader, in whom began the Hohenstaufen dynasty, so named from the Swabian family seat on the lofty Staufen hill rising from the Rems River.
From this event dates the strife of the Welfs and Waiblingens, who in Italy became known as Guelfs and Ghibellines. The chief opponents in the long strife that ensued were the Guelf dukes, Henry the Proud and Henry the Lion, and the Ghibelline emperor Frederick Barbarossa.
Frederick Barbarossa (Redbeard) succeeded his father Conrad in 1152, and began a reign which was disturbed by wars with his nobility and by expeditions into Italy to subdue the revolts of the city republics of Lombardy against imperial authority. During his first expedition to Italy, 1154-1155, Barbarossa soon crushed all opposition and was crowned Emperor of the Holy Roman Empire, at Rome, by Pope Hadrian IV. During his second expedition, 1158-1162, he destroyed the city of Milan and dispersed the inhabitants, who sought refuge in cities with which they had formerly been at enmity. Barbarossa's violence antagonized the Italians, and they combined in the Lombard League to drive him out of Italy. He was excommunicated by Pope Alexander III, who succeeded Hadrian in 1159, and to inaugurate the league a town named Alessandria in honor of the Pope was founded on the Piedmont frontier. In the expedition of 1166-1168 Barbarossa, who had set up an antipope, captured Rome and enthroned Paschal III as pope. His triumph however, was shortened by a pestilence which decimated his troops, and thence began a series of reverses which ended in the ascendency of the Lombard League.