Guy of Lusignan (c. 1150 – 18 July 1194) was a Poitevin knight, son of Hugh VIII of the Lusignan dynasty. He was king of the crusader state of Jerusalem from 1186 to 1192 by right of marriage to Sibylla of Jerusalem, and of Cyprus from 1192 to 1194. Having arrived in the Holy Land (where his brother Amalric was already prominent) at an unknown date, Guy was hastily married to Sibylla in 1180 to prevent a political incident within the kingdom. As Baldwin's health deteriorated, Guy was appointed regent of Jerusalem; at Sibylla's succession to the throne in 1186 she gave the crown to Guy as her king-consort. Guy's reign was marked by increased hostilities with the Ayyubids ruled by Saladin, culminating in the disastrous Battle of Hattin in July 1187—during which Guy was captured—and the fall of Jerusalem itself three months later.