John I, Duke of Brabant

John I, called the Victorious (1252/1253–1294), became Duke of Brabant in 1267 after his infirm brother Henry IV was set aside. His first wife, a daughter of Louis IX, died young with their infant son; in 1273 he married Margaret of Flanders, mother of his successor John II.

In the War of the Limburg Succession he defeated Rainald I of Guelders and the archbishop of Cologne at Worringen in 1288, winning Limburg for Brabant. A famed patron of poets, he was mortally wounded in May 1294 in a melee at the wedding feasts of Bar-le-Duc.