reinstate his brother-in-law Vladislaus II as duke, whose half-sister Gertrude of Babenberg he is married. Conrad lays siege to the Prague Castle. Siege of Lisbon (1142): King Afonso I Henriques of Portugal attempts to besiege Lisbon with the aid of a group of Anglo-Norman crusaders. England Autumn – The 9-year-old Henry of Anjou, a son of Queen Matilda, lands on the south coast of England with his uncle, Earl Robert of Gloucester and several knights. Henry travels to Bristol, centre of Angevin opposition to King Stephen, where he is educated by Master Matthew. Meanwhile, Robert captures Lulworth Castle, Rufus Castle ("Bow and Arrow Castle") on the Isle of Portland and Wareham Castle. December – Stephen lays siege to Oxford Castle, trapping Matilda and her supporters inside the city. Just before Christmas she manages to escape across the snow and ice of the frozen Thames River – dressed in white (to get past Stephen's pickets), and safely reaches Abingdon. The next day Oxford Castle surrenders to Stephen, Matilda rides with an escort to Wallingford Castle, where she seeks refuge. Levant Autumn – Imad al-Din Zengi, Seljuk governor (atabeg) of Mosul, continues his campaign against the Kurds in southeastern Anatolia (since 1141). Byzantine forces under John II fail to take Antioch. Raymond II, count of Tripoli, grants property in the county (such as the massive castle Krak des Chevaliers) to the Knights Hospitaller. After acquiring the site, they begin building new fortifications. Africa Abd al-Mu'min, ruler of the Almohad Caliphate, is unable to feed his population during a famine. He recognize the de facto protectorate of Roger II to support the commercial center of Mahdia. A Norman raid against the city of Tripoli fails. Asia January 5 – Emperor Sutoku abdicates the throne after a 19-year reign and becomes a monk. He is succeeded by his 3-year-old brother Konoe, who accedes as the 76th emperor of Japan. January 28 – Despite having saved the southern Song Dynasty from attempts by the northern Jin Dynasty to conquer it, Chinese general Yue Fei is executed by the Song government. October 11 – Treaty of Shaoxing: The northern Jin Dynasty and Southern Song Dynasty sign a peace treaty, this ending the Jurchen campaigns against the Song Dynasty in China. Births Al-Mustadi, caliph of the Abbasid Caliphate (d. 1180) Fujiwara no Takanobu, Japanese portrait painter (d. 1205) Hugh III of Burgundy, French nobleman (approximate date) Moinuddin