Dom Claude Lancelot, a French grammarian, born in Paris about 1615, died at Quimperle, April 15, 1695. In early life he attracted the attention of Duvergier de Hauranne, the celebrated abbot of St. Cyran, and through his influence he joined the recluses of Port Royal, whom he greatly assisted in the organization and management of their schools. He wrote grammars of the Latin, Greek, Italian, and Spanish languages, and a Grammaire generate et raisonnee, better known as Grammaire de Port Royal, which has been frequently reprinted. On the dispersion of the society of Port Royal in 1660, Lancelot became preceptor of the duke of Chevreuse's son, and from 1669 to 1672 was attached in the same capacity to the two young princes of Conti. In 1673 he retired to the abbey of St. Cyran, where he led a life of austerity; and in 1680 was ordered to Quimperle, where his last years were spent in devotion. Besides his philological works, he left a manuscript memoir of the abbot of St.

Cyran, which was published in Cologne in 1738, and an account of a tour in 1667 to La Grande Chartreuse and Alet (London, 1813).