Year 1187 (MCLXXXVII) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire Spring – Emperor Isaac II (Angelos) sends a Byzantine expeditionary force under Alexios Branas to suppress the Vlach-Bulgarian Rebellion – but Alexios revolts against Isaac and is proclaimed emperor in Andrianople. He musters troops and advances on Constantinople in an attempt to seize it. However, Alexios is unable to bypass the city defenses and is defeated by the imperial forces led by Conrad of Montferrat, the emperor's brother-in-law. On the battlefield, Alexios is beheaded by Conrad's supporting footsoldiers and the rebel army flees the field. Siege of Lovech: Byzantine forces under Isaac II besiege the fortress city of Lovech in north-central Bulgaria. After a three-month siege, Isaac is forced to accept a truce by recognizing the joint-rule of Peter II and Ivan Asen I as emperor's (or tsar) over the territory, leading to the creation of the Second Bulgarian Empire (until 1396). Levant Spring – The Crusaders under Raynald of Châtillon attack a large Muslim caravan, including members of Saladin's family, journeying from Cairo. Raynald takes the merchants, and their families with all their possessions to his castle of Kerak. Saladin demands the release of the prisoners and compensation for their losses. This is refused by Raynald, who pays no attention to his order. March 13 – Saladin leaves Damascus with his Muslim forces, and sends letters to neighboring countries, asking for volunteers for a forthcoming jihad ("Holy War"). A week later his younger brother Al-Adil, governor of Egypt, leads his forces out of Cairo towards Syria. Meanwhile, Saladin leaves an army under his 18-year-old son Al-Afdal at Busra, to keep watch on the 'Pilgrim road'. April – King Guy of Lusignan summons his vassals and marches north to Nazareth, to reduce Galilee to submission. April 29 – A delegation under Balian of Ibelin is sent to Tiberias, to reconcile with Raymond III, prince of Galilee. After Easter, a second delegation (supported by the Knights Templar and Knights Hospitaller) is sent to Tripoli, but the situation remains unchanged. May 1 – Battle of Cresson: A Muslim reconnaissance force (some 7,000 men) under Muzaffar al-Din Gökböri, defeats a small Crusader army near Nazareth. Only Gerard de Ridefort, commander of the Crusaders, and a handful of knights escape death or capture. The Muslims scatter and kill the