a French prelate, was born at Paris, April 20,1669. After having been admitted doctor at the Sorbonnue, he was appointed one of the king's almoners, under the auspices of Madame de Maintenon, next grand-vicar of cardinal Noailles, and obtained, in 1704, the bishopric of Auxerre. In that city he exhibited his charity during the very severe winter of 1709. He was one of the opponents of the bull Unigenitus, and also one of the twelve bishops who protested against the deposition of Soanen and against the declaration of 1730. Caylus died at Rennes, April 3, 1754. His works were published in 10 vols., from 1750 to 1752. See Hoefer, Nouv. Biog. G n rale, s.v.