Career
Jean was also the grandfather of Louis de Gruuthuse, himself a "bulwark of Burgundian chivalry" and a notable participant in tournaments in the 1440s. The tournament took place on the Groote Markt (great market square) of Bruges. Most of the participants were from the town patriciate.
There are several extant copies of full lists of participants with their coats of arms, often appended to copies of King René's Tournament Book, which work of the 1460s was substantially influenced by the Bruges tournament of 1393.
