Baldwin V of Jerusalem contested between Baldwin IV's sister and their younger half-sister Isabella. Their extended family and leading nobles were divided in support for the two heiresses. Raymond III of Tripoli, first cousin of their father Amalric I of Jerusalem, had been "bailli" or regent for Baldwin IV while the latter was a child, but once the king came of age in 1176 his power began to recede. He had a claim to the throne in his own right, but his childlessness hindered him advancing it. Instead, he acted as a power-broker, and aided the interests of the Ibelin family. Amalric's widow (Isabella's
Baldwin of Avesnes Baldwin of Avesnes Baldwin of Avesnes (September 1219 in Oizy – 10 April 1295 in Avesnes) was a son of Bouchard IV of Avesnes and his wife, Margaret II of Flanders. His parents' marriage was later declared illegal, because his father had already received minor orders. Baldwin was later declared legitimate by the pope, at the instigation of King Louis IX of France. In 1246, Baldwin received Beaumont as an apanage. He fought his whole life, together with his brother John I, against his half-brothers from his mother's second marriage with William II of Dampierre. He was said to be