He served under King Charles VII of France in Normandy and Guienne, and was awarded honours by Louis XI.
In 1462, Jacques succeeded his father, and Louis XI married him to his god-daughter, Louise of Anjou,[2] daughter of Charles of Le Maine.
Louis XI also recognized his title to the Duchy of Nemours,[3] which he had disputed with the King of Navarre.
[citation needed] Sent by Louis to pacify Roussillon, Nemours felt that he had been insufficiently rewarded for the rapid success of this expedition, and joined the League of the Public Weal in 1465.
After twice pardoning him, the king's patience became exhausted, and he besieged the duke's chateau at Carlat and imprisoned him.