events

Battle of West-Capelle: John I of Avesnes defeats Guy of Dampierre.

John I, Count of Hainaut

Count of Hainaut from 1246 to 1257

John of Avesnes was the count of Hainaut from 1246 to his death.
Source: Wikipedia (CC BY-SA)

Guy, Count of Flanders

Count of Flanders from 1251 to 1305

Guy of Dampierre was the Count of Flanders (1251–1305) and Marquis of Namur (1264–1305). He was a prisoner of the French when his Flemings defeated the latter at the Battle of the Golden Spurs in 1302.
Source: Wikipedia (CC BY-SA)