DUPIN, Louis EI,LiEs (1657-1719), a celebrated -French ecclesiastical historian, belone-ed to a noble family in Normandy, and was born at FParis on the 17th June i657. He received his early- education from his father, and had scarcely reached his tenth year when he entered the college of Harcourt, where he graduated as M.A. in 1672. Deteimining to adopt the ecclesiastical profession, he became a pupil of the Sorbonne, and received the degre, of B.D. 1680, and that of D.D. in 1684. About this time he con-ceived the idea of a Ilibliothelue Universelle de taus les A ?dears Ecelesiastiques, the first volume of which appeared in 1686. The liberty with which he there treated the doctrines of the fathers aroused ecclesiastical piejudice, and the arch-bislicp of Paris condemned the work. Dupin consented to a retractation, but it was suppressed in 1693 ; he was, however, allowed again to continue it on changing its title, to the extent of substituting _Youvelle for Universelle. He was subsc,,quently exiled to Chatellerault as a, Jansenist, but the seutenee of banishment was repealed on a new retractation. In 1718 he entered into a correspondence with Wake, archbishop of Canterbury, with a view to a union of the English and Gallica]] churches ; and, being suspected of projecting a change in the dogmas of the church, his papers were seized in 1719, but nothing was found that could be properly framed into an accusation against him. The same zeal for union is said to have induced during the residence of Peter the Great in France, and Lt that monarch's request, to draw up a plan for uniting lbe Greek and Roman churches. He died at Paris on the iIth June 1719.

Dupin was a voluminous author. Besides his great work on teelesiastieal authors, mention may be made of Bibliotheque Uni-;:erselle des Historiens, 2 vols. 0707); L'Histoire de l'Eglise C91, abreg6 (1712) ; and L' ilistoire Profane depuis le commencement du Monde iusqu' a present, 4 vols. 1712.