1210

• May – The Second Parliament of Ravennika, convened by Emperor Henry of Flanders, is held in the town of Ravennika (in modern Greece), in order to resolve the differences between the princes of Frankish Greece, and the Roman Catholic clergy of their domains. The assembled nobles and prelates conclude a concordat, which recognizes the independence and immunity of all Church property in Frankish Greece from any feudal duties.Miller, William (1908). The Latins in the Levant: A History of Frankish Greece (1204–1566), p. 75. London: John Murray. {{OCLC|563022439}}.
• July 18 – Battle of Gestilren: Sverker the Younger, the exiled former King of Sweden, is defeated and killed by the reigning King Erik Knutsson. After the battle, Erik takes the Swedish throne and marries Princess Rikissa of Denmark, daughter of the late King Valdemar I of Denmark to improve the relations with Denmark, which had supported King Sverker.
• November 18 – Emperor Otto IV is excommunicated by Pope Innocent III after he occupies Apulia in southern Italy. Otto annuls the Concordat of Worms and demands from Innocent recognition of the imperial crown's right. A German civil war breaks out, and Otto prepares an invasion against Frederick II, king of Sicily.Dunham, S. A. (1835). A History of the Germanic Empire, Vol I, p. 196.
• November 21 – Eric X is crowned – which is the first known coronation of a Swedish king. He strengthens his relationship with his brother-in-law, King Valdemar II of Denmark ("the Conqueror"). Shortly after, Valdemar conquers Danzig (modern-day Gdańsk) on the Baltic coast, and Eastern Pomerania from the Slavonic Wends.Williams, Hywel (2005). Cassell's Chronology of World History, p. 133. {{ISBN|0-304-35730-8}}.
• Battle of Ümera: Estonian forces defeat the Crusaders of the Livonian Brothers of the Sword. The Estonians pursue the fleeing Crusaders and according to the Livonian Chronicle some of the prisoners are burned alive, while others have crosses carved on their backs with swords before being executed as well.Subrena, Jean-Jacques (2004). Estonia: Identity and Independence, p. 301. {{ISBN|90-420-0890-3}}.

• The Papal Interdict of 1208 remains in force.
• King John extends his taxes and raises £100,000 from church property as an extraordinary fiscal levy; the operation is described as an “inestimable and incomparable exaction” by contemporary sources.{{cite journal|last=Ferris|first=Eleanor|title=The Financial Relations of the Knights Templars to the English Crown|journal=American Historical Review|year=1902|volume=8|issue=1|pages=1–17|doi=10.2307/1832571|jstor=1832571}}
• November 1 – John orders that Jews across the country have to pay a tallage, a sum of money to the king. Those who do not pay are arrested and imprisoned. Many Jews are executed or leave the country.Carpenter, David (2004). The Struggle for Mastery: The Penguin History of Britain (1066–1284), p. 272. London: Penguin. {{ISBN|978-0-14-014824-4}}.

• September 14 – The 18-year-old Maria of Montferrat marries the French nobleman John of Brienne, who brings a dowry of 40,000 silver pounds (from King Philip II and Pope Innocent III). On October 3, the couple is crowned as King and Queen of Jerusalem in the Crusader Cathedral of Tyre (modern Lebanon).Steven Runciman (1952). A History of The Crusades. Vol III: The Kingdom of Acre, p. 113. {{ISBN|978-0-241-29877-0}}.

• Jochi, Mongol leader and eldest son of Genghis Khan, begins a campaign against the Kyrgyz. Meanwhile, Emperor Xiang Zong of Western Xia agrees to submit to Mongol rule, he gives his daughter, Chaka, in marriage to Genghis and pays him a tribute of camels, falcons, and textiles.Man, John (2004). Genghis Khan: Life, Death, and Resurrection, p. 162. New York City: St. Martin's Press. {{ISBN|978-0-553-81498-9}}.
• December 12 – Emperor Tsuchimikado abdicates the throne in favor of his younger brother, Juntoku, after a 12-year reign. He is the second son of the former Emperor Go-Toba and becomes the 84th emperor of Japan.

• 1210–1211 – Shazi creates the Pen Box, from Persia (Iran) or Afghanistan (it is now kept at Freer Gallery of Art, Smithsonian Institution, Washington, D.C.).
• Gottfried von Strassburg writes his epic poem Tristan (approximate date).

• September 24 – Venus occults Jupiter (the last such occurrence until 1570).

• Pope Innocent III allows the formation of the mendicant order of Francis of Assisi, to begin the Order of Friars Minor.
• The church of St Helen's Bishopsgate in the City of London is founded, as a priory of Benedictine nuns.

• May 5 – Afonso III (the Boulonnais), king of Portugal (d. 1279)
• June 24 – Floris IV, Count of Holland, Dutch nobleman and knight (d. 1234)
• July 22 – Joan of England, queen of Scotland (d. 1238){{cite book |editor=Elizabeth Ewan|title=The biographical dictionary of Scottish women : from the earliest times to 2004|url=https://archive.org/details/biographicaldict00ewan|url-access=limited|date=2006|publisher=Edinburgh Univ. Press|location=Edinburgh|isbn=0-7486-1713-2|page=[https://archive.org/details/biographicaldict00ewan/page/n466 400]|edition=Reprinted }}
• unknown date – Alice of Montferrat, queen consort of Cyprus (d. 1233)

• March 29 – Fakhr al-Din al-Razi, Persian polymath (b. 1150)
• May 6 – Conrad II, Margrave of Lusatia, German nobleman and knight (b. 1159)
• May 13 – Noriko (or Hanshi), Japanese empress (b. 1177)
• July 17 – Sverker II (the Younger), king of Sweden
• October 16 – Matilda of Boulogne, duchess of Brabant
• November 14 – Qutb al-Din Aibak, Indian ruler (b. 1150)
• November 30 – Florence of Holland, Scottish bishop
• December 14 – Soffredo, Italian cardinal and patriarch
• Aonghus mac Somhairle, Norse-Gaelic chieftain
• Gottfried von Strassburg, German poet and writer
• Halldóra Eyjólfsdóttir, Icelandic nun and abbess
• Jean Bodel, French poet and writer (b. 1165)
• Jinul (or Chinul), Korean Zen Master (b. 1158)
• Lu You, Chinese historian, poet and writer (b. 1125)
• Majd ad-Dīn Ibn Athir, Zangid historian (b. 1149)
• Maud de Braose, English noblewoman (b. 1155)
• Muhammad II, ruler of the Alamut state (b. 1148)
• Praepositinus, Italian philosopher and theologian
• Risteárd de Tiúit, Norman warrior and nobleman
• Robert of Braybrooke, English landowner (b. 1168)
• William FitzAlan, Norman nobleman and knight

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