CAUCHON (Calconeus), PIERRE. — Bishop of Beauvais, born near Reims c. 1371, died at Lisieux in 1442. He studied in Paris and served in the party of the Burgundians. He became bishop of Beauvais in 1420. The population of the diocese, which included many Armagnacs and was openly anti-English, expelled him in 1429. He was the principal judge in the trial of St. Giovanna d'Arco in 1431, in which he conducted himself very badly (cf. U. Chevalier, L'abjuration de Jeanne d'Arc au cimetière de St-Ouen et l'authenticité de sa formule, Paris 1902), and this further discredited him in his homeland. He then solicited a diocese in Normandy from England and was made bishop of Lisieux in 1432; he subsequently attended the Council of Basel (1434–35) and the Assembly of Arras in 1435.
son origine, ses dignités, sa mort et sa sépulture, Reims 1896; P. Champion, Procès de condamnation de Jeanne d'Arc, II, Paris 1920 (v. indice a pp. 439–40); A. Billard, Jeanne d'Arc et ses juges, there 1933.