Isabella I of Jerusalem tried to play Isabella and her husband off against him, but Humphrey did homage to the royal couple. Isabella was the daughter of Amalric, King of Jerusalem, by his second wife, Maria Comnena. Maria Comnena (who was a grandniece of the Byzantine Emperor, Manuel I Komnenos) married Amalric on 29 August 1171. Isabella was born before September 1172. Amalric died unexpectedly on 11 July 1174. His son by his first marriage, Baldwin IV, was crowned king two weeks later. Before long, it became obvious that Baldwin suffered from lepromatous leprosy. To secure the succession of the ailing king, his sister,
Baldwin II of Jerusalem victorious". Baldwin returned to Antioch two days later, where the townspeople and the patriarch gave him a "victor's welcome". Before leaving Antioch he granted the County of Edessa to Joscelin of Courtenay. Baldwin and his wife were crowned king and queen in Bethlehem on Christmas Day. He and the Patriarch held a general assembly at Nablus on 16January 1120. The prelates and noblemen who attended the meeting confirmed the clergy's right to collect the tithe and to bear arms "in the cause of defense". The council also ordered the punishment of adulterers, pimps, sodomites and bigamists, and prohibited sexual relations