1280

Events

* Construction on the northern section of the Grand Canal of China is begun.
* The final expansion of the Lincoln Cathedral is completed.
* King Magnus I of Sweden founds a Swedish nobility by enacting a law accepting a contribution of a cavalry-member in lieu of ordinary tax payments.
* King Edward I of England forms the Court of King's Bench to hear petitions for justice instead of the king hearing them himself.
* The Wolf minimum of solar activity begins (approximate date).
* The Asen dynasty of tsars of Bulgaria ends.
* Syria attempts to secede from the Mamluk sultanate of Egypt, but Qalawun defeats the rebels and keeps Syria within the Egyptian sultanate.
* The second of two main surveys of the Hundred Rolls, an English census seen as a follow up to the Domesday Book completed in 1086, is completed; it began in 1279.
* Turin is conquered by Thomas III of Savoy, becoming the capital of the House of Savoy.
*Osman starts to rule.

Births

* Birger of Sweden (d. 1321)
* Wu Zhen, Chinese painter (d. 1354)

Deaths

* August 22 - Pope Nicholas III (b. 1218)
* November 15 - Albertus Magnus, German theologian
* Magnus VI of Norway