In June 1585 he raised an infantry regiment and led it on campaign in Languedoc until 1587 as part of the duke of Montmorency's force.
He was captured again in July 1590 during the siege of Paris, before switching to the Catholic League and converting to Roman Catholicism.
Coligny-le-Vieux and Andelot were promoted into marquisates in his favour, but in 1629 he sold them both to his cousin Clériadus de Coligny.
Joachim-François, marquis d’Andelot, mestre-de-camp to a 1200 strong infantry regiment and his father's successor as lieutenant governor of Champagne (1615).
He campaigned in Italy and in 1623 presented himself to Monsieur de Bérulle for reception into the Oratorian order in Paris.
Born in 1605, he owed his name to his recovery from illness aged six months on 7 February 1609, after his father prayed for the intercession of saint Bernard of Clairvaux.