DUPIN, LOUIS-ELLIES. — Jansenist theologian and historian, b. in Paris on 17 June 1657, d. 6 June 1719. Doctor at the Sorbonne and professor at the Collège Royal, he published in Paris from 1686 to 1714, in 47 volumes, the *Nouvelle bibliothèque des auteurs ecclesiastiques*.
The work aroused severe criticism and was placed on the Index on 1 July 1693 and again on 10 May 1757. Dupin incurred censure for his doubts regarding the canonical books, for his contempt of patristic and conciliar tradition, for his denial of the primacy of the Holy See, for his sympathy toward Nestorius, and for his errors concerning devotion to the Virgin. Having lost his chair, Dupin deluded himself into believing he could reconcile the Catholic Church with the Greek Church by writing to Peter the Great during his stay in Paris, hoping to make him an intermediary; he also negotiated with the Archbishop of Canterbury, in the hope of uniting the Anglican Church with the Catholic Church.
Besides the works mentioned, Dupin composed the *Traité de la puissance ecclesiastique et temporelle* (1707) and the *Traité historique des communications* (1715), both placed on the Index (decrees of 14 March 1708 and 12 August 1716), as well as various other works of a religious nature.