Gibieuf a French theologian, was born at Bourges in the latter half of the 16th century. He was educated by the cardinal de Berulle, studied theology, and received the degree of doctor at the Sorbonne in 1612. The previous year he had, with four other priests, under the direction of Peter de Berulle, then also a simple priest, formed the nucleus of the congregation of the Oratorio. His general, who had introduced into France the order of Carmelites, made Gibieuf his vicar-general. He was at the same time commendatory of July; a house then occupied by the canons regular. The laxity which characterized these monks led him to seek their reform from the cardinal De la Rochefoucauld. The house of Juilly was united with that of St. Genevieve, and later to the congregation of the Oratorio. It is claimed that, owing to modesty, he refused the bishopric of Nantes. He died at the seminary of St. Magloire, of which he was first superior, June 6, 1650. He wrote, De Libertate Dei et Creaturae (Paris, 1630): — La Vie et les Grandeurs de la Tres-Sainte Vierge (ibid. 1637): — Catecheses de la Maniere de Vie Parfaite (posthumous, ibid. 1653). He was allied with the most learned and distinguished men of his time. See Hoefer, Nouv. Biog. Generale, s.v.