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 I, Latin Emperor trying to seduce Kaloyan's wife. The historian George Acropolites reports that the Tsar had Baldwin's skull made into a drinking cup, just as had happened to Nicephorus I almost four hundred years before. Tsar Kaloyan wrote to Pope Innocent III, reporting that Baldwin had died in prison. A tower of the Tsarevets fortress of the medieval Bulgarian capital, Veliko Tarnovo, is still called Baldwin's Tower; supposedly, it was the tower where he was interned. It was not until July 1206 that the Latins in Constantinople had reliable information that Baldwin was dead. His brother Henry was crowned emperor in August.