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
King of Jerusalem named Guy as "bailli". Raymond contested this, but when Guy fell out of favour with Baldwin the following year, he was re-appointed "bailli" and was given possession of Beirut. Baldwin came to an agreement with Raymond and the Haute Cour to make Baldwin of Montferrat, Sibylla's son by her first marriage, his heir, before Sibylla and Guy. The child was crowned co-king as Baldwin V in 1183 in a ceremony presided by Raymond. It was agreed that, should the boy die during his minority, the regency would pass to "the most rightful heirs" until his kinsmen – the Kings of