largest city of the world, taking the lead from Constantinople, capital of the Byzantine Empire. Asia June 29 – 1170 Syria earthquake: One of the largest earthquakes to hit Syria. It forms part of a sequence of large earthquakes that propagate southwards along the Dead Sea Transform, starting with the 1138 Aleppo earthquake and continuing with the 1157 Hama, 1170 and 1202 Syria events. The palace guards massacre the civil officials at the Korean court of Goryeo and place Myeongjong as new ruler on the throne of the Goryeo dynasty. By topic Folklore The Welsh prince Madoc (son of King Owain ap Gruffudd of Gwynedd) sails to North America, in his ship the Gwennan Gorn, and founds a colony. Religion Peter Waldo, a French merchant of Lyon, starts the popular religious movement of the "Poor Men of Lyon", or Waldenses. Births April 5 – Isabella of Hainault, queen of France (d. 1190) May 9 – Valdemar II (the Conqueror), king of Denmark (d. 1241) August 8 – Dominic, founder of the Dominican Order (d. 1221) October 8 – Vladimir III Igorevich, Kievan prince (d. 1211) Agnes I, countess of Nevers, Auxerre and Tonnerre (d. 1192) Al-Dakhwar, Ayyubid physician and medical officer (d. 1230) Amaury I, French nobleman (House of Craon) (d. 1226) Asukai Masatsune, Japanese waka poet and writer (d. 1221) Azzo VI of Este (or Azzolino), Italian nobleman (d. 1212) Bahauddin Zakariya, Ghurid scholar and poet (d. 1262) Erard of Brienne-Ramerupt, French nobleman (d. 1246) Ermengarde de Beaumont, queen of Scotland (d. 1233) Eustace the Monk, French mercenary and pirate (d. 1217) Franca Visalta, Italian nun and abbess (approximate date) Gebhard I of Plain (or Pleyen), German bishop (d. 1232) Giovanni Colonna (the Younger), Italian cardinal (d. 1245) Henry Borwin II (or Burwy), German nobleman (d. 1226) Hubert de Burgh, English Chief Justiciar (approximate date) John of Brienne (or John I), king of Jerusalem (d. 1237) Leonardo of Pisa, Italian mathematician (approximate date) Lope Díaz II, Castilian nobleman (House of Haro) (d. 1236) Maelgwn ap Rhys, Welsh prince of Deheubarth (d. 1230) Matilda of Boulogne, duchess of Brabant (approximate date) Minamoto no Ienaga, Japanese nobleman and poet (d. 1234) Muqali (or Mukhhulai), Mongol military leader (d. 1223) Pons d'Ortaffa, Catalan nobleman and troubadour (d. 1246) Ranulf de Blondeville, English nobleman and regent (d. 1232) Richard de Percy, English nobleman (approximate date) Rodrigo Jiménez de Rada, Navarrese bishop (d. 1247)