With the water merchants, heirs of the "nautes of Lutèce" who exercise the monopoly that holds the Abbey of Saint-Denis for the trade along the Seine, and the "Grande Boucherie" (Big Butchery), which reunites the owners of farms of the suburbs and those of salting workshops intra and extramurals, they constitute alongside the clergy and the nobility a third power that will consecrate in 1357 the Great Ordinance of the provost of the merchants, Etienne Marcel, and which will become financially decisive, as the will illustrate the Cabochien revolt.