over 200 bishops present. Council of Toulouse: The Catholic Church condemns the Petrobrusian heresy. Technology Zhu Yu, a Chinese historian, writes his book Pingzhou Table Talks (published this year), the earliest known use of separate hull compartments in ships. Zhu Yu's book is the first to report the use of a magnetic compass for navigation at sea. Although the first actual description of the magnetic compass is by another Chinese writer Shen Kuo in his Dream Pool Essays (published in 1088). Births February 28 – Xi Zong, Chinese emperor (d. 1150) July 7 – Sutoku, Japanese emperor (d. 1164) Ahmed-Al-Kabeer, Arab Sufi teacher (d. 1182) Aldebrandus, bishop of Fossombrone (d. 1219) Matthias I, duke of Lorraine (approximate date) Tancred, Norman nobleman (approximate date) William de Warenne, 3rd Earl of Surrey (d. 1148) Deaths January 29 – Gelasius II, pope of the Catholic Church March 10 – Muirchertach Ua Briain, king of Munster March 29 – Peter de Honestis, Lombard monk June 20 – Henry de Beaumont, 1st Earl of Warwick June 27 – Herwig of Meissen, German bishop June 28 – Roger of Salerno, Norman nobleman July 17 – Baldwin VII, count of Flanders (b. 1093) July 22 – Herbert de Losinga, English bishop August 4 – Landulf II, archbishop of Benevento September 13 – Gleb Vseslavich, Kievan prince October 13 – Alan IV, duke of Brittany (b. 1063) Aedh Ua Con Ceannainn, king of Uí Díarmata Geoffrey de Clyve (de Clive), English bishop Ibn Aqil, Persian theologian and jurist (b. 1040) Johannes of Jerusalem, French abbot (b. 1042) Robert the Leper (Leprous), French nobleman Wang Ximeng, Chinese painter (b. 1096) References