Kingdom of Sicily at Misilmeri but the most crucial battle was the siege of Palermo, which led to Sicily being completely under Norman control by 1091. The Norman Kingdom was created on Christmas Day, 1130, by Roger II of Sicily, with the agreement of Pope Innocent II, who united the lands Roger had inherited from his father Roger I of Sicily. These areas included the Maltese Archipelago, which was conquered from the Arabs of the Emirates of Sicily; the Duchy of Apulia and the County of Sicily, which had belonged to his cousin William II, Duke of Apulia, until William's death in 1127;
Constance, Queen of Sicily Constance's father-in-law Frederick Barbarossa was on a crusade Henry and Constance were forced to stay in Germany and could not maintain her claim to Sicily. Emperor Frederick died in 1190 and the following year Henry and Constance were crowned Emperor and Empress. Constance then accompanied her husband at the head of a substantial imperial army to forcefully take the Sicilian throne from Tancred with the support of the loyal Pisa fleet. The northern towns of Sicily opened their gates to Henry, including the earliest Norman strongholds Capua and Aversa. Salerno, Roger II's mainland capital, sent word ahead that Henry was