Bouchard was one of the most significant lords of France under the first reign of Robert, son of King Hugh Capet.
He had a dispute with the Abbot of Saint Denis about Basset Castle in L'Île-Saint-Denis.
From this stronghold Bouchard ransomed the boats that passed within reach, including those of the monks of the abbey of Saint-Denis.
Abbot Vivien complained to King Robert II the Pious.
By a judgment of his peer barons and the king, on January 25, 997, he was forced to respect the royal protection granted to the monks of Saint-Denis, to demolish the Basset Castle, and to accept the exchange of his island of Saint-Denis against the castle and the fief of Montmorency.