Baldwin IV of Jerusalem Baldwin IV of Jerusalem Baldwin IV (; ; 1161 – 16 March 1185), called "the Leper", or The Leper King, reigned as King of Jerusalem from 1174 until his death. He was the son of Amalric I of Jerusalem and his first wife, Agnes of Courtenay. Baldwin spent his childhood in his father's court in Jerusalem, having little contact with his mother, Agnes of Courtenay, Countess of Jaffa and Ascalon, and later Lady of Sidon, whom his father had been forced to divorce. Baldwin IV was educated by the historian William of Tyre (later Archbishop of Tyre and Chancellor of
Baldwin I of Jerusalem from his subjects. He appointed his relative, Baldwin of Le Bourcq, his successor in the county and Le Bourcq swore fealty to him. About 200 knights and 300–700 foot-soldiers accompanied Baldwin when he left Edessa on 2October 1100. He spent four days in Antioch, but did not accept the local inhabitants' offer to administer the principality during Bohemond's captivity. Duqaq of Damascus wanted to ambush him on the narrow road near the mouth of the Nahr al-Kaib River. Fakhr al-Mulk, the qadi of Tripoli, secretly warned Baldwin, enabling him to make arrangements to defeat the attack and he routed the