Year 1158 (MCLVIII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. Events By place Byzantine Empire Autumn – Emperor Manuel I (Komnenos) sets out from Constantinople at the head of an expeditionary army. He marches to Cillicia; and while the main army follows the coast road eastwards – Manuel hurries ahead with a force of only 500 cavalry. He manages to surprise King Thoros II (the Great), who has participated in the attack on Cyprus (see 1156). Thoros flees into the mountains and Cilicia is occupied by the Byzantines. Europe January 11 – Vladislav II becomes king of Bohemia. He is crowned by Emperor Frederick I (Barbarossa) with a diadem (called by the chroniclers a diadema or circulus). Vladislaus is also invested with Upper Lusatia, and accompanies Frederick to Milan to suppress the rebellion in Lombardy (Northern Italy). The Diet of Roncaglia is convoked by Frederick I. He mobilises an army of 100,000 men and leaves in June for a second Italian expedition – accompanied by Henry the Lion and his Saxon forces. He crosses the Alps and lays siege to Milan. German forces capture the city from the rebels after a short siege. However Milan soon rebels again, with Empress Beatrice taken captive and forced into parading on a donkey. Raymond of Fitero, Spanish monk and abbot, pledges to defend the fortress of Calatrava (guarding the roads to Córdoba and Toledo) from incoming Muslim raiders. It is the founding moment of the Order of Calatrava, the spearhead of the Iberian armies during the Reconquista. August 31 – King Sancho III (the Desired) dies after a 1-year reign. He is succeeded by his 2-year-old son Alfonso VIII (the Noble) as ruler of Castile. The noble houses of Lara and Castro claim the regency, as the boy's uncle, Ferdinand II (ruler of León and Galicia). Portuguese forces, led by King Afonso I (the Great), conquer Pamela, Alcácer do Sal and Sesimbra from the diminished Almoravids. England Summer – King Henry II travels to France to meet King Louis VII and propose a marriage between his three-year-old son Henry and Louis' daughter Margaret (less than a year old). She is shipped to England, as the future wife and queen. The Vexin region is promised to Margaret as dowry and is put under the care of the Knights Templar, until her future husband is