1280 ( MCCLXXX ) was a leap year starting on Monday of the Julian calendar , the 1280th year of the Common Era (CE) and Anno Domini (AD) designations, the 280th year of the 2nd millennium , the 80th year of the 13th century , and the 1st year of the 1280s decade. As of the start of 1280, the Gregorian calendar was 7 days ahead of the Julian calendar, which was the dominant calendar of the time.

Events [ change | change source ]

• Construction on the northern section of the Grand Canal of China begins.
• The final stage of the Lincoln Cathedral is completed.
• King Edward I of England forms the Court of King's Bench . The Bench hears 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 tries to leave from the Mamluk sultanate of Egypt . Qalawun defeats the rebels and keeps Syria in the Egyptian sultanate.
• The second of two main surveys of the Hundred Rolls is completed. It began in 1279 .
• Turin is conquered by Thomas III of Savoy . It becomes the capital of the House of Savoy .
• Osman starts to rule.

Births [ change | change source ]

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

Deaths [ change | change source ]

• May 9 – Magnus VI of Norway
• August 22 – Pope Nicholas III (b. 1218 )
• November 15 – Albertus Magnus , German theologian