Events

• Detmold, Germany was founded.
• Mindaugas, the first and only Christian king of Lithuania, is assassinated by his cousin Treniota.
• Balliol College, Oxford was founded.
• The chieftains of the eastern part of Iceland become the last to pledge fealty to the Norwegian king, bringing a more complete end to the Icelandic Commonwealth and the Icelandic civil war.

Births

Deaths

• Orkney Islands, December 15 - Haakon IV of Norway
• Mindaugas, King of Lithuania

Monarchs/Presidents

• Aragon - James I King of Aragon and count of Barcelona (reigned from 1213 to 1276)