Sibylla, Queen of Jerusalem in the context of "Eva Green"

Guy of Lusignan (c. 1150 – 1194) was king of Jerusalem, first as the husband and co-ruler of Queen Sibylla from 1186 to 1190, then as disputed ruler from 1190 to 1192. He was also lord of Cyprus from 1192 to 1194. As king, Guy was highly unpopular amongst the nobles of the Kingdom of Jerusalem, and is often blamed for the fall of the kingdom to Saladin.

A Frankish Poitevin knight, Guy was the youngest son of Hugh VIII of Lusignan and the younger brother of Aimery of Lusignan. After killing Patrick, 1st Earl of Salisbury, in a failed attempt to kidnap Eleanor of Aquitaine, he was banished from Poitou. After arriving in the Holy Land at an unknown date from 1173 to 1180, Guy was hastily married to Sibylla, the sister of Baldwin IV of Jerusalem, in 1180 to prevent a political coup. As Baldwin's health deteriorated due to his leprosy, he appointed Guy as regent in 1183. However, Guy proved to be unpopular and incompetent as a leader, and Baldwin IV resumed power later that year. He stripped Guy of his inheritance, naming Baldwin V, Sibylla's son by her first husband William, as his co-king and eventual successor instead. Baldwin IV died in 1185, followed shortly by the sickly Baldwin V in 1186, leading to the succession of Sibylla. Sibylla was told to annul her marriage to Guy in order to ascend to the throne on the condition that she would be allowed to pick her next husband, but astonished the court by choosing to remarry and crown Guy. Guy's reign was marked by increased hostilities with the Ayyubids, ruled by Saladin, culminating in the Battle of Hattin in July 1187—during which Guy was captured—and the fall of Jerusalem itself three months later.