Jean du Vergier de Hauranne

Jean du Vergier de Hauranne, the Abbé (Abbot) of Saint-Cyran, (1581 – 6 October 1643) was a French Catholic priest who introduced Jansenism into France.

Born in the city of Bayonne to a family of butchers, Vergier studied theology at the Catholic University of Leuven. Either there or, more likely in 1604 in Paris, he formed a friendship with Cornelius Jansen and, as the wealthier of the two, became Jansen's patron for a number of years, getting Jansen a job as a tutor in 1606. Two years later, he obtained for Jansen a position teaching at the episcopal (or "bishop's") college back in Bayonne. The duo spent 1611–1614 there, in seclusion in a house belonging to the family, where they studied the Church Fathers together, with a special focus on the thought of St. Augustine of Hippo, until Jansen left Bayonne in 1614 to return to the Dutch Republic.

In 1617 Vergier left Bayonne at the invitation of Henri-Louis Chasteigner de La Roche-Posay, the Bishop of Poitiers, where he soon became a leading figure of the diocese. In 1620 he became the commendatory abbot of the Abbey of Saint-Cyran and was thus generally known as the Abbé de Saint-Cyran for the rest of his life. During that same year, he made the acquaintance of the mystic, Charles de Condren, and through him Pierre de Bérulle, founder of the French Oratory. He also became friends with Robert Arnauld d'Andilly, through whom he became connected with the Arnauld family.

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