Year by year · 13th century

1227

1227 in world history: 6 events, 1 birth, 11 deaths and 2 states that came to an end. 686 recorded states existed that year.

Events

  1. 19 March

    Ugolino di Conti is elected Pope Gregory IX

    Following the death of Pope Honorius III, Ugolino di Conti was elected pope and took the name Gregory IX. He reigned until 1241 and is known for issuing the Decretales and instituting the Papal Inquisition.

    Pope Honorius III

  2. 22 July

    A north German coalition defeats Valdemar II at Bornhöved

    Near Bornhöved in Holstein, an army of Lübeck, Hamburg, Dithmarschen, Holstein and north German nobles under Count Adolf IV of Schauenburg and Holstein defeated King Valdemar II of Denmark. Valdemar lost most of his German conquests but kept Estonia.

    Valdemar II of Denmark

  3. 18 August

    Genghis Khan dies during his campaign against the Tangut

    Genghis Khan died during the siege of the Western Xia, traditionally on this date. He had built the Mongol Empire, which under his heirs became the largest contiguous land empire in history.

    Mongol Empire

  4. 29 September

    Pope Gregory IX excommunicates Emperor Frederick II

    Gregory IX excommunicated Frederick II for again delaying his promised crusade. Frederick went anyway, regaining Jerusalem by treaty in 1229 and crowning himself in the Holy Sepulchre.

    Holy Roman EmpireFrederick II

  5. Battle

    Battle of Bornhöved

    The Battle of Bornhöved was fought on 22 July 1227 in Holstein, where an alliance of north German princes, including Count Adolf IV of Holstein, Count Henry of Schwerin, the Archbishop of Bremen and the city of Lübeck, defeated King Valdemar II of Denmark.

ProfileState605 states with a known seat in 1227Open the atlas at 1227 →

In the profiles

  • Chagatai EmpireChagatai Khan begins his rule over the appanage allotted by Genghis Khan

Born in 1227 1

Died in 1227 11

States that came to an end 2

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APA
The Epoch Institute. (2026). 1227. In The Epoch Institute, Year by Year. https://the-epoch-institute.org/years/1227
MLA
“1227.” The Epoch Institute, Year by Year, The Epoch Institute, 2026, https://the-epoch-institute.org/years/1227. Accessed .
Chicago
The Epoch Institute. “1227.” The Epoch Institute, Year by Year. 2026. https://the-epoch-institute.org/years/1227.
Harvard
The Epoch Institute (2026) ‘1227’, The Epoch Institute, Year by Year. Available at: https://the-epoch-institute.org/years/1227 (Accessed: ).