BERTRAND, PIERRE (Bertrandus, Petrus). – French decretalist, died on 23 June 1348 or 24 June 1349. He studied at the University of Orléans. He taught canon law at Avignon, Montpellier, Orléans, and finally Paris. Bishop of various French sees from 1320, he was then elected cardinal in 1331 by John XXII for the energy he had demonstrated at the assembly of Vincennes (1329) in defending the value of ecclesiastical jurisdiction against the protest of Pietro di Cugnières; indeed, against him he wrote: Libellus P. B. super iurisdictione ecclesiastica et temporali. Even more noteworthy is the other work: De origine iurisdictionum (Paris 1551), which lays, as it were, the foundations of ecclesiastical public law.
BIBL.: G. Mollat, s. V. in DHG, VIII, 1095-96; F. Schulte, Die Gesch. der Quellen und Lit. des kanon. Rechtes, II, Stuttgart 1887, p. 236. Antonio Rota