3Guy of Lusignan (c. 1150-1194) was a French knight who, through marriage, became king-consort of Jerusalem, and led the kingdom to disaster at the Battle of Hattin in 1187.
Guy was a son of Count Hugh VIII of Lusignan, in Poitou, France, at that time under Queen Eleanor, her third son Richard Lionheart, and her husband the English king Henry II. In 1168 Guy and his brothers ambushed and killed Patrick of Salisbury, 1st Earl of Salisbury, who was returning from a pilgrimage. They were banished from Poitou by their overlord, Richard, then (acting) Duke of Aquitaine. Along with his brother, Amalric, Guy went to Jerusalem in the 1170s, where he became a client of Agnes of Courtenay, the divorced mother of King Baldwin IV, who held the county of Jaffa and Ascalon. Amalric became soon Agnes's constable in Jaffa, and, as rumors alleged, also her lover. Agnes was concerned that her political rivals, headed by the regent Raymond III of Tripoli, were determined to exercise more control by forcing Agnes' daughter, the princess Sibylla, to marry someone of their choosing. Agnes foiled these plans by advising her son to have Sibylla married to Guy. To this he agreed, and Guy and Sibylla were hastily married at Eastertide 1180. By his marriage he also became count of Jaffa and Ascalon and bailiff of Jerusalem. The young Sibylla already had one child, a son from her first marriage.
An ambitious man, Guy convinced Baldwin IV to name him regent in early 1182, much to the displeasure of the Haute Cour. However, Guy's behavior as regent soon outraged the court. Many native born Frankish settlers (the descendants of the original crusaders), wanted to make peace with Saladin, sultan of Egypt, having become weary of the constant warfare and threats on their borders. But Guy and Raynald of Chatillon, and other newly-arrived crusaders, were there to fight. Guy's continuous provocations against Saladin threatened any peace between Jerusalem and Egypt.
Agnes herself was displeased at Guy's disgrace, and refused to come to his defense. Throughout late 1182 and early 1183 Baldwin IV tried to have his sister's marriage to Guy annulled, showing that Baldwin still held his sister with some favour. Baldwin IV had wanted a loyal brother-in-law, and was frustrated in Guy's hard-headedness and disobedience. Sibylla was held up in Ascalon, though perhaps not against her will. Unsuccessful in prying his sister and close heir away from Guy, the king and the Haute Cour altered the succession, placing Baldwin V, Sibylla's son from her first marriage to William of Montferrat, in precedence over Sibylla, and decreeing a process to choose the monarch afterwards between Sibylla and Isabella (whom Baldwin and the Haute Cour thus recognized as at least equally entitled to succession as Sibylla), though she was not herself excluded from the succession. Guy kept a low profile from 1183 until his wife became queen in 1186.