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 of Luxembourg good terms with the Capetian court of France. He was only twenty-two years of age when elected Archbishop of Trier in 1307. In 1308, he was consecrated bishop by Pope Clement V in Poitiers. He quickly became one of the most influential princes in Germany, influencing the election that year of his brother Henry VII as King and Holy Roman Emperor. From 1310 to 1313, Baldwin accompanied Henry in Italy, where he was crowned emperor in Rome on 29 June 1312. In the election which followed Henry's early death the next year, Baldwin lent his support to Louis the Bavarian.