He is mentioned together with his father in a document dated 5 August 1303, containing a list of lords who accompanied King Philip IV in the Franco-Flemish War, he may even have taken part in the battle of Mons-en-Pévèle the following year.
In 1309, he granted the Dominican monks of Argentan, known as the Jacobins, a vineyard located near their property.
In 1313, the provost of Paris issued a decree, approved by Parliament, transferring the disputed lands into the hands of the King, pending a final decision.
[2] Jean took part in the military campaign of Philip V, who gathered the feudal militia for the war in Flanders at Easter 1317.
[3] He was married to Jeanne de Caltot daughter of Robert lord of Berneval-en-Caux.