1280s

The 1280s was a decade that began on 1 January 1280 and ended on 31 December 1289. It is distinct from the decade known as the 129th decade which began on January 1, 1281 and ended on December 31, 1290.

Millennium:	2nd millennium
Centuries:	12th century – 13th century – 14th century
Decades:	1250s 1260s 1270s – 1280s – 1290s 1300s 1310s
Years:	1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
Categories:	Births – Deaths – Architecture Establishments – Disestablishments

Events

• 1282 – March – Dafydd ap Gruffydd, brother to Prince of Wales Llywelyn the Last, attacks an English castle; his brother feels compelled to support him despite poor preparation for war, quickly leading to the final English conquest of Wales by King Edward I of England.
• 1286 – Prussians settled in exile in Serbia stage a famous uprising.
• 1288 – June 5 – John I of Brabant defeats the duchy of Guelders in the Battle of Worringen — one of the largest battles in Europe of the Middle Ages — thus winning possession of the duchy of Limburg. The battle also liberates the city of Cologne from rule by the Archbishopric of Cologne; it had previously been one of the major ecclesiastical principalities of the Holy Roman Empire.
• 1288 – August 8 – Pope Nicholas IV proclaims a crusade against King Ladislaus IV of Hungary, who had lost credibility by favoring his semi-pagan Cuman subjects and in general refusing to conform to the social standards of western Europe.