In 1147 Manuel I granted a passage through his dominions to two armies of the Second Crusade under Conrad III of Germany and Louis VII of France. At this time, there were still members of the Byzantine court who remembered the passage of the First Crusade. The contemporary Byzantine historian Kinnamos describes a full-scale clash between a Byzantine force and part of Conrad's army, outside the walls of Constantinople. The Byzantines defeated the Germans and, in Byzantine eyes, this reverse caused Conrad to agree to have his army speedily ferried across to Damalis on the Asian shore of the Bosphoros. After 1147, however, the relations between the two leaders became friendlier. By 1148 Manuel had seen the wisdom of securing an alliance with Conrad, whose sister-in-law Bertha of Sulzbach he had earlier married; he actually persuaded the German king to renew their alliance against Roger II of Sicily. Unfortunately for the Byzantine emperor, Conrad died in 1152, and despite repeated attempts, Manuel could not reach an agreement with his successor, Frederick Barbarossa.