Cardaillac, Jean, a French theologian, was born in the early part of the 14th century. He belonged to the noble family of Quercy, which furnished to the Church so many illustrious prelates, among others, William of Cardaillac, bishop of Cahors, in 1209. After having taught law in Toulouse, Jean Cardaillac became bishop of Orense in 1351, and of Braga in 1360. He was held in prison by Peter the Cruel from 1367 to 1369, but was appointed by pope Gregory XI patriarch of Alexandria and administrator of the Church of Rodez in 1371, and in 1378 perpetual administrator of the archbishopric of Toulouse. He died Oct. 7, 1390, leaving several books, preserved in the library of the Dominicans of Toulouse, among others, sermons for the Sabbaths and festivals of the year, various treatises on synodal conferences and the sacred orders, and a Funeral Oration on the death of pope Clement VI; also one on that of Urban V, etc. See Hoefer, Nouv. Biog. Generale, s.v.