Baldwin of Ibelin year, the king betrothed his younger half-sister Isabella of Jerusalem, Balian's stepdaughter, to Humphrey IV of Toron, to further reduce the Ibelins' influence. In 1183 he supported Raymond against Guy, who was by now regent for the ailing Baldwin IV. Lord Baldwin was among the barons who advised the king to crown Sibylla's son Baldwin V in 1183, while Baldwin IV was still alive; this was an attempt to prevent Guy from succeeding as king. Baldwin V became sole king while still a child in 1185, and when the young king died in 1186, Sibylla was crowned queen with Guy
Baldwin V of Jerusalem kingdom, preceding Sibylla's claim. Baldwin V, aged 5, was crowned co-king. The succession crisis also prompted a mission to the west to seek assistance: in 1184, Patriarch Eraclius, along with Roger de Moulins, Grand Master of the Knights Hospitaller, and Arnaud de Toroge, Grand Master of the Knights Templar, travelled throughout the courts of Europe. Eraclius offered the kingship to both Philip II of France and Henry II of England: the former was the son of Louis VII, a first cousin of Baldwin V's father; the latter was a first cousin of Baldwin IV and Sibylla, and had promised to