The first crusader army organized by the Holy See reached the borders of Hungary in September 1096. It was led by Godfrey of Bouillon, Duke of Lower Lorraine. Godfrey sent a knight who had already been known to Coloman to start negotiations about the crusaders' entry into Hungary. Eight days later, Coloman agreed to meet with Godfrey in Sopron. The king allowed the crusaders to march through his kingdom but stipulated that Godfrey's younger brother Baldwin and his family should stay with him as hostages. The crusaders passed through Hungary peacefully along the right bank of the Danube; Coloman and his army followed them on the left bank. He only released his hostages after all the crusaders had crossed the river Sava, which marked the kingdom's southern frontier. The uneventful march of the main crusader army across Hungary established Coloman's good reputation throughout Europe.