1288
For broader historical context, see 1280s and 13th century.
| Years: 1285 1286 1287 - 1288 - 1289 1290 1291 | |
| Decades: 1250s 1260s 1270s - 1280s - 1290s 1300s 1310s | |
| Centuries: 12th century - 13th century - 14th century 1288 state leaders | |
Events
- 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.
- 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.
- The Scottish Parliament creates a law allowing women to propose marriage to men duirng leap years; men who refuse such proposals are required to pay a fine to the spurned bride-to-be.
- The oldest surviving bell in the clocks atop the dome of St. Peter's Basilica in Rome dates to 1288.
- Vietnamese general Tran Hung Dao sinks the entire fleet of an invading Yuan dynasty Mongol army by placing steel-tipped bamboo stakes in the Bach Dang River, near Halong Bay.
- The Japanese era Koan ends, and the Shōō era begins.
Births
- King Charles I of Hungary (year uncertain; d. 1342)
- Gazi Evrenos, progenitor of a noble Ottoman family (d. 1417?)
- Gersonides, Jewish philosopher, mathematician, and astronomer (d. 1344)
- Ivan I of Russia, Grand Prince of Moscow (d. 1340)
Deaths
- Gertrude of Austria (b. 1226)
- Guy de Montfort, Count of Nola (approximate date; b. 1244)
- Ibn Nafis, Arabic scientist (b. 1210)
