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 III, Count of Flanders Arnulf II, with Arnulf I acting as regent until his own death. Then Baldwin Balso continued as the regent for the child. During his short rule, Baldwin was responsible for establishing the wool manufacturing industry at Ghent and markets at other towns in Flanders. Baldwin III died on 1 January 962. After Baldwin's death, Arnulf I arranged for King Lothair of France to become the guardian of Baldwin's son Arnulf II. "Shortly before 961" Baldwin married Mathilde of Saxony († 1008), daughter of Hermann Billung(† 973), Duke of Saxony. They had a son, Baldwin's heir: <br> Baldwin III, Count of