to favor pope Innocent II. In March 1131 these three met in Liège, where Lothair performed the ceremonial strator service (stirrup holder) for the pope and promised help in the conflict against Anacletus and Roger II of Sicily. His request for investiture restoration was rejected, but all rights and privileges as laid out in the Concordat of Worms were confirmed. Innocent II crowned Lothair King of the Romans again on 29 March 1131. Lothair was accompanied by a modest troop contingent as most men were garrisoned in Germany to counter Staufer aggression. He carefully avoided hostilities but attempted to besiege Milan, which, however, failed. Eventually he arrived in Rome. As Anacletus controlled St. Peter, Lothair's imperial coronation took place in the Lateran Basilica on 4 June 1133. Emperor Lothair continued to avoid explicit resistance against papal impediments on his royal office. He ignored Innocent's bull, in which he advocated imperial authority derived from him and Lothair recognized papal claims to the vast Matildine estates in Northern Italy (formerly owned by Margravine Matilda of Tuscany), although he was able to secure the territorial fiefs. Campaign against Sicily In the northern empire Lothair finally succeeded and defeated the Staufers in 1135 thanks to the help of Henry the Proud, who had been the Duke of Bavaria since the death of his father, Henry the Black. At the Reichstag in Bamberg in 1135 the brothers were pardoned and restored to their office and estates. Anti-king Conrad renounced his royal title, The Staufers promised to take part in the Emperor's second Italian campaign, before a ten-year constitutio pacis was declared. Lothair, now uncontested ruler, set out in 1136 with a sizeable army. The campaign proved to be successful and indeed, Roger II of Sicily soon sought peace. In 1136 the campaign against Roger began at the insistence of Innocent II and Byzantine Emperor John II Comnenus. Two columns, one led by Lothair, the other by his son-in-law Henry the Proud arrived in Italy. On the river Tronto, Count William of Loritello did homage to Lothair and opened the gates of Termoli to him. Advancing deep into the southern part of the peninsula, the two armies met at Bari, and continued further south in 1137. Roger offered to give Apulia as a fief of the Empire to one of his sons and give another son as a hostage, terms which Lothair refused after being pressured