Complex sentence: He also sought the protection of the House of Zähringen, after loosing the rights to the dioceses of Sion, Lausanne and Geneva, granted by emperor Frederick Barbarossa in 1156 to Berthold IV of Zähringen instead.
Split into simpler sentences: He also sought the protection of the House of Zähringen, after loosing the rights to the dioceses of Sion, Lausanne and Geneva. Emperor Frederick Barbarossa in 1156 granted the rights to Berthold IV of Zähringen instead.