1231
Pope Gregory IX formalizes the Inquisition
By the bull Excommunicamus, Gregory entrusted the hunt for heretics to Dominican friars answerable directly to Rome rather than local bishops.
Ogedei sends Chormaqan to pacify Iran
The Great Khan dispatched a Mongol army under Chormaqan Noyan to finish off the remnants of the Khwarazmian Empire in western Iran.
Wolgok Fortress withstands Mongol siege in Korea
During the first Mongol invasion of the Korean peninsula, the fortress of Wolgok held out against repeated assaults, demonstrating that Korean fortification…
Elizabeth of Hungary dies at Marburg
The widowed Thuringian princess, a disciple of Franciscan piety, died at twenty-four after years of serving the sick in a hospital she founded at Marburg.
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Frequently asked
What happened in the year 1231?
Saeculum lists 4 events from 1231. The most significant is Pope Gregory IX formalizes the Inquisition: By the bull Excommunicamus, Gregory entrusted the hunt for heretics to Dominican friars answerable directly to Rome rather than local bishops.
What era was 1231 part of?
1231 falls within the High Middle Ages (1000-1300). Crusades, cathedrals, and the slow waking of Europe.
Which regions saw notable events in 1231?
The events from 1231 span Europe, Central Asia and East Asia.