For broader historical context, see 13th century.

Events

• King Mindaugas of Lithuania renounces Christianity, returning to his pagan roots and reverting to Grand Duke of Lithuania.
• The Icelandic Commonwealth enters into a treaty establishing a union with Norway and acknowledges Norwegian King Haakon IV as its ruler.
• Strasbourg becomes an Imperial Free City of the Holy Roman Empire.
• King Mengrai of the Lannathai kingdom in present day Thailand founds the city of Chiang Rai as the kingdom's first capital.
• Adam de la Halle writes the first operetta, "Le Jeu de la Feuillee".
• Richard of Chichester is canonized as a saint; he is best known for authoring the prayer later adapted into the song Day by Day in the musical Godspell.

Births

• July 2 - Arthur II, Duke of Brittany
• Hugh le Despenser, 1st Earl of Winchester
• King Ladislaus IV of Hungary
• U Tak , early Korean poet of the sijo style

Deaths

• July 15 - Richard de Clare, 6th Earl of Hertford
• Bahauddin Zikriya , credited with bringing Suhrawardi Sufism to the Indian subcontinent
• Blessed Aegidius of Assisi, one of the original companions of Saint Francis of Assisi
• Shinran Shonin, founder of the Jodo Shinshu branch of Pure Land Buddhism in Japan

See also

• List of state leaders in 1262