 Raynald was the first among the witnesses to sign most royal charters between 1177 and 1180 , showing that he was the king 's most influential official during this period . Raynald became one of the principal supporters of Guy of Lusignan , who married the king 's elder sister , Sybilla , in early 1180 , although many barons of the realm had opposed the marriage . The king 's half sister , Isabella ( whose stepfather , Balian of Ibelin was Guy of Lusignan 's opponent ) was engaged to Raynald 's stepson , Humphrey IV of Toron , in autumn 1180 . Baldwin IV dispatched Raynald , along with Heraclius , Latin Patriarch of Jerusalem , to mediate a reconciliation between Bohemond III of Antioch and Patriarch Aimery in early 1181 . Roupen III , Lord of Cilician Armenia , married Raynald 's stepdaughter , Isabella of Toron . 
