a French prelate, was born at the castle of Gondrin, in the diocese of Auch, in 1620. He studied at the College of La Fleche, at the University of Paris, and in the Sorbonne. Being a relative of the bishop of Sens, Octavius of Bellegarde, he was appointed his coadjutor in 1645, and succeeded him the following year. He was one of the first who censured the Apology of the Casuists. In 1653 he signed the letter of the assembly of the clergy to pope Innocent X, in which the prelates recognized only the five famous propositions of Jansenius. He disapproved of the conduct of his niece, Mme. de Montespan, at the court. He died at the abbey of Chaulnes, September 20, 1674, leaving letters and pastoral ordinances. See Hoefer, Nouv. Biog. Generale, s.v.