Year 1154 (MCLIV) was a common year starting on Friday (link will display the full calendar) of the Julian calendar. Events By place Levant April 18 – Nur al-Din, Seljuk ruler (atabeg) of Aleppo, encamps before Damascus and overthrows Mujir al-Din by force with support of the Jewish citizens, who open the eastern gate to the bulk of his army. Mujir flees to the citadel, but capitulates after only a few hours. He is offered his life and the Emirate of Homs. A few weeks later Mujir is suspected of plotting with old friends in Damascus and is exiled to Baghdad. Damascus is annexed to Zangid territory and all of Syria is unified under the authority of Nur al-Din, from Edessa in the north to the Hauran to the south. Nur al-Din establishes the Al-Nuri Hospital in Damascus. The hospital has outpatient consulting rooms, a conference room, prayer hall, vestibules and bathrooms. Europe February 26 – King Roger II dies at Palermo after a 24-year reign. He is succeeded by his fourth son William I (the Bad) as ruler of Sicily. William appoints Maio of Bari, a man of low birth, to chancellor and his adviser. He pursues his father's policy of strengthening authority over the towns and the Italian nobles, who rally around his cousin Robert III, count of Loritello, in Apulia and Calabria. Autumn – King Frederick I (Barbarossa) leads a expedition into Italy for his imperial coronation. He wants to impose his will upon the towns and cities of Lombardy, a region long accustomed to interference from Germany. Frederick encounters stiff resistance to his authority, the Lombard nobles are unwilling to acknowledge his rule and the rights to raise taxes. The Almohad army conquers the last independent Muslim stronghold at Granada (modern Spain), after a six year siege.<ref>Gilbert Meynier (2010). L'Algérie cæur du Maghreb classique. De l'ouverture islamo-arabe au repli (658–1518). Paris: La Dïcouverte; p. 88.</ref> The Banate of Bosnia becomes an autonomous duchy as part of the Lands of the Hungarian Crown. Tallinn, the capital of Estonia, is first marked on the world map by Muhammad al-Idrisi. Africa Normans conduct a series of raids in North Africa, including Annaba (modern Algeria) and the Nile Delta. England October 25 – King Stephen dies after a short illness at Dover. He is succeeded by Henry of Anjou, the son of Queen Matilda. December 19 – The 21-year-old Henry