1204

Template:Use mdy dates Template:About year Template:Year nav Template:C13 year in topicYear 1204 (MCCIV) was a leap year starting on Thursday of the Julian calendar.

Events

• January 27–28 – Byzantine emperor Alexios IV Angelos is overthrown in a revolution.<ref name="c">Template:O City of Byzantium</ref>
• February 5 – Alexios V Doukas is crowned Byzantine emperor.<ref>Template:Cite web (Novgorod Chronicle)</ref>

  

  Conquest of Constantinople by the Crusaders

• April 12 – Sack of Constantinople: Crusaders enter Constantinople by storm and start pillaging the city as part of the Fourth Crusade.<ref name="c"/> Forces of the Republic of Venice seize the antique statues that will become the horses of Saint Mark.<ref>Template:Cite book</ref>
• May 16 – Baldwin, Count of Flanders, is crowned emperor of the Latin Empire a week after his election by the members of the Fourth Crusade.<ref>Template:Cite book</ref>
• Theodore I Laskaris flees to Nicaea after the capture of Constantinople, and establishes the Empire of Nicaea; Byzantine successor states are also established in Epirus and Trebizond.<ref>Template:Cite book</ref><ref>Template:Cite book</ref>
• Boniface I, Marquis of Montferrat, a leader of the Fourth Crusade, founds the Kingdom of Thessalonica.<ref>Template:Cite book</ref>
• The writings of French theologian Amalric of Bena are condemned by the University of Paris and Pope Innocent III.<ref>Template:Cite book</ref>
• Tsar Kaloyan is recognized as king of Bulgaria by Pope Innocent III, after the creation of the Bulgarian Uniate church.<ref>Template:Cite book</ref>
• Valdemar II of Denmark is recognized as king in Norway.<ref>Template:Cite book</ref>
• Angers and Normandy are captured by Philip II of France.<ref>Template:Cite book</ref><ref>Template:Cite book</ref>
• The Cistercian convent of Port-Royal-des-Champs is established.<ref>Template:Cite book</ref>
• The district of Cham becomes subject to Bavaria.<ref>Template:Cite book</ref>
• Hermann I, Landgrave of Thuringia submits to Philip of Swabia.<ref>Template:Cite book</ref>
• Beaulieu Abbey is founded.<ref>Template:Cite book</ref>
• The Channel Islands of Guernsey and Jersey decide, after a plebiscite of wealthy land owners, to remain with the English crown, after Normandy is recaptured by Philip II of France.<ref>Template:Cite book</ref>
• Landshut, Bavaria, is Founded.<ref>Template:Cite web</ref>

Births

• April 14 – Henry I, king of Castile (d. 1217)<ref>Template:Cite book</ref>
• Haakon IV of Norway (d. 1263)<ref name=":2">Template:Cite book</ref>
• Henry Raspe, Landgrave of Thuringia (d. 1247)<ref>Template:Cite book</ref>
• Maria of Courtenay, Empress regent of Nicaea (d. 1228)
• Alice of Schaerbeek (d. 1250)<ref>Template:Cite book</ref>

Deaths

• January 1 – King Haakon III of Norway<ref name=":2" />
• January – Isaac II Angelos, Byzantine emperor<ref>Template:Cite book</ref>
• February 8 – Alexios IV Angelos, Byzantine emperor<ref name=":1">Template:Cite book</ref>
• April 1 – Eleanor of Aquitaine, Sovereign Duchess Regnant of Aquitaine, queen of France and England<ref>Template:Cite book</ref>
• August 11 – King Guttorm of Norway<ref name=":0">Template:Cite book</ref>
• August 14 – Minamoto no Yoriie, Japanese shōgun (b. 1182)<ref>Template:Cite book</ref>
• September 30 or November 30 – Emeric, King of Hungary (b. 1174)<ref>Template:Cite book</ref>
• c. October 21 – Robert de Beaumont, 4th Earl of Leicester, English nobleman<ref>Template:Cite book</ref>
• November – Ban Kulin, ruler of Bosnia (b. 1163)<ref>Template:Cite book</ref>
• December 12 (or December 13) – Maimonides, Spanish rabbi and philosopher (b. 1135)<ref>Template:Cite book</ref>
• December 22 – Fujiwara no Shunzei, Japanese waka poet (b. 1114)<ref>Template:Cite web</ref>
• date unknown – Suleiman II, Sultan of Rûm<ref>Template:Cite book</ref>
• probable – Amalric of Bena, French theologian<ref>Template:Cite book</ref>