On the deposition of Henry, our Rudolf of Rheinfelden was elected king by the opposing party, and was thence called the Popish king (Pfaffenkönig); thus Switzerland, it is almost needless to say, was drawn into the struggle and convulsed by intestine wars. The bishops of Lausanne, Geneva, and Basel; the seigneurs of Grandson and Neuchâtel, clung to the emperor; the counts of Geneva and Toggenburg, the houses of Habsburg, Kyburg, and Savoy, and the clergy of Alamannia and Chur-Rhætia sided with the new king. St. Gall rallied round its valiant abbot, Ulrich III., to uphold the cause of Henry. The wars were continued with alternate successes and reverses on each side, till the death of Rudolf in 1080 on the Grona, near Leipzig, it was said by the hand of Godefroi de Bouillon, the famous crusader, who fought on the side of Henry. The intensity of bitter feeling gradually abated. Henry even tried to establish his royal authority in Burgundy, but in Alamannia new quarrels broke out on the question of the succession to the duchy. Two native Swabian dukes contended for the duchy, Frederick von Staufen, grandfather of Frederick Barbarossa, the ancestor of the illustrious dynasty, and Duke Bertold von Zaeringen, brother-in-law and heir to the estates of the son of the late Rudolf of Rheinfelden, who died shortly after his father. The differences were settled by a diet at Mayence, in 1097, and Frederick von Staufen, son-in-law to Henry, who had staunchly upheld and fought for the imperial cause in the Popish quarrels, was invested with the Swabian duchy. Yet his power on the Swiss side of the Rhine was more nominal than real, and it was exerted by Bertold II. of Zaeringen, who received in compensation for the loss of the duchy the ducal title, and the _Reichsvogtei Zürich_ (a kind of prefecture), together with the royal prerogatives over the secular and religious institutions of the city. For Zurich was then the noblest and most conspicuous town in Swabia, as Bishop Otto von Freysingen, the most prominent historian of the Middle Ages, asserts. This severance of Swiss Alamannia, and particularly of the imperial prefecture of Zurich, from the empire tended greatly to bring about the gradual political separation. Under the Zaeringer came again a long period of comparative peace. VIII. THE REIGN OF THE HOUSE OF ZAERINGEN. (1050-1218.) The rule of the Dukes of Zaeringen ushered in a long period of comparative peace (1100-1218), which improved the social and material condition of the people. Yet this time of peace was every now and again interrupted in the west by feuds with the Burgundian nobles. This Swabian family took their name from the ancestral manor of Zaeringen, near Freiburg, in the Breisgau (Black Forest). The vast estates they had derived from the House of Rheinfelden on its extinction reached from Lake Geneva to the rivers Aare and Emme, and gave them a dominant position in the country at the opening of the twelfth century.