Baldwin IV, who had become seriously ill, made Guy of Lusignan "bailli" (or regent) in October 1183. Within a month, Baldwin dismissed Guy, and had Guy's five-year-old stepson, Baldwin V, crowned king. Raynald was not present at the child's coronation, because he attended the wedding of his stepson, Humphrey, and BaldwinIV's sister, Isabella, in Kerak. Saladin unexpectedly invaded Oultrejordain, forcing the local inhabitants to seek refuge in Kerak. After Saladin broke into the town, Raynald only managed to escape to the fortress because one of his retainers had hindered the attackers from seizing the bridge between the town and the castle. Saladin laid siege to Kerak. According to Ernoul, Raynald's wife sent dishes from the wedding to Saladin, persuading him to stop bombarding the tower where her son and his wife stayed. After envoys from Kerak informed BaldwinIV of the siege, the royal army left Jerusalem for Kerak under the command of the king and RaymondIII of Tripoli. Saladin abandoned the siege before their arrival on 4December. On Saladin's order, Izz al-Din Usama had a fortress built at Ajloun, near the northern border of Raynald's domains.