The Worcestershire rebellion led by Robert de Lacy (a son of Ilbert de Lacy) is dealt with quickly by Wulfstan, bishop of Worcester, who calls on those knights and local landowners still loyal to William II to defend Worcester. Many of the rebels are captured or killed.
William II calls the representatives of the fyrd to a meeting in London. He promises (with the support of Lanfranc, bishop of Canterbury) the people better laws, and the removal of taxes if they support him against the rebels.
William II lays siege to Pevensey Castle on the south coast where Odo of Bayeux has taken shelter with Robert. Odo is forced to surrender, and agrees to go to Rochester to convince the rebels to accept William as the rightful king of England.
Summer – William II lays siege to Rochester Castle and puts down the revolt. Odo of Bayeux and the rebels surrender (agreeing only that their lives will be spared). William takes Odo's lands and exiles him to Normandy.
Su Song, Chinese polymath scientist and statesman, invents the pilot model for his astronomicalclock tower constructed in Kaifeng. It features an escapement mechanism – and the world's oldest known power-transmitting chain drive to operate the armillary sphere, opening doors, and mechanical-driven mannequins, that would rotate in shifts to announce the time on plaques.
^Gilbert Meynier (2010). L'Algérie cœur du Maghreb classique. De l'ouverture islamo-arabe au repli (658–1518). Paris: La Découverte; p. 83.
^McGrank, Lawrence (1981). "Norman crusaders and the Catalan reconquest: Robert Burdet and te principality of Tarragona 1129–55". Journal of Medieval History. 7 (1): 67–82. doi:10.1016/0304-4181(81)90036-1.
