The Cathedral Church of Saint-Pierre had a Chapter composed of the bishop and twenty-four canons. The officers of the Chapter were: the Dean, the Cantor, the Provost, the sub-Dean, the sub-Cantor, and the three archdeacons (who are not prebends). The Abbé of Nôtre-Dame-le-Grand was also a member of the Chapter ex officio.
Before the Revolution, the diocese had three archdeacons: the Archdeacon of Poitiers, the Archdeacon of Briançay (or Brioux), and the Archdeacon of Thouars.
The current archbishop is Pascal Wintzer, who was appointed in 2012. Since 2010 there have been three priestly ordinations in the diocese, and four ordinations of Permanent Deacons.
Louis Duchesne holds that its earliest episcopal catalogue represents the ecclesiastical tradition of Poitiers in the twelfth century. The catalogue reckons twelve predecessors of Hilary of Poitiers, among them Nectarius, Liberius, and Agon, and among his successors Sts. Quintianus and Maxentius. Duchesne does not doubt the existence of the cults of these saints, but he questions whether they were bishops of Poitiers. In his opinion, Hilary (350 – 367 or 368) is the first bishop of whom we have historical evidence. In this he concurs with the Benedictine ors of Gallia Christiana.
Among his successors were Arnauld d'Aux (1306–1312), made cardinal in 1312; Guy de Malsec (1371–1375), who became cardinal in 1375; Simon de Cramaud (1385–1391), indefatigable opponent of the antipope Benedict XIII, who became cardinal in 1413; Louis de Bar (1394–95), cardinal in 1397 who administered the diocese (1413–1423); Jean de la Trémouille (1505–07), cardinal in 1507; Gabriel de Gramont (1532–1534), cardinal in 1507; Claude de Longwy de Givry (1538–1552), became cardinal in 1533; Antonio Barberini (1652–1657), cardinal in 1627; Abbé de Pradt (1805–1809), Chaplain of Consul Napoleon Bonaparte and afterwards Archbishop of Mechlin, Louis Pie (1849–1880), cardinal in 1879.
St. Emmeram was a native of Poitiers, but according to the Bollandists and Duchesne the documents which make him Bishop of Poitiers (c. 650) are not trustworthy. On the other hand, Bernard Sepp, while admitting that there is no evidence (at vero in catalogo episcoporum huius dioecesis nomen Emmerammi non occurrit...), nonetheless points out that there is space after the death of Dido and the accession of Ansoaldus for Emmeramus, that is, between 674 and 696. Dom François Chamard, Abbot of Solesmes, claims that he did hold the see, and succeeded Didon, bishop about 666 or 668.
Bishop Gilbert de la Porrée attended the concilium generale which began at Reims on 21 March 1148 and continued for the rest of the month, under the presidency of Pope Eugenius III. After the conclusion of the council, he was attacked in a papal consistory by Bernard of Clairvaux, always searching for heretics, schismatics and other deviants from his strict view of orthodoxy, for various heterodox theological opinions. Gilbert demanded that he be judged on the basis of what he had written, not on what people believed that he had said, and he was able to argue each charge successfully against Bernard. Pope Eugene ruled in Gilbert's favor, with the full agreement of the cardinals in attendance, and sent the bishop back to his diocese with his powers undiminished and in full honor.
Charles VII of France erected a university at Poitiers, which was his temporary capital, since he had been driven from Paris, in 1431. The new foundation stood in opposition to Paris, where the city was in the hands of the English and the majority of the faculty had accepted Henry VI of England. With a Bull of 28 May 1431, on the petition of Charles VII, Pope Eugene IV approved the new university and awarded it privileges similar to those of the University of Toulouse. In the reign of Louis XII there were in Poitiers no less than four thousand students — French, Italians, Flemings, Scots, and Germans. There were ten colleges attached to the university. In 1540, at the Collège Ste. Marthe, the famous Classicist Marc Antoine Muret had a chair; Gregory XIII called him to Rome to work on his ion of the Septuagint, pronouncing him the torch and the pillar of the Roman School. The famous Jesuit Juan Maldonado and five of his confrères went in 1570 to Poitiers to establish a Jesuit college at the request of some of the inhabitants. After two unsuccessful attempts, the Jesuits were given the Collège Ste. Marthe in 1605. François Garasse was professor at Poitiers (1607–08), and had as a pupil Guez de Balzac. Garasse was well known for his violent polemics. He died of the plague at Poitiers in 1637. Among other students at Poitiers were Achille de Harlay, President de Thou, the poet Joachim du Bellay, the chronicler Brantome Descartes, François Viète the mathematician, and Francis Bacon. In the seventeenth century the Jesuits sought affiliation with the university and in spite of the opposition of the faculties of theology and arts their request was granted. Jesuit ascendancy grew; they united to Ste. Marthe the Collège du Puygareau. Friction between them and the university was continuous, and in 1762 the general laws against them throughout France led to the Society being expelled from Poitiers and from France. Moreover, from 1674 the Jesuits had conducted at Poitiers a college for clerical students from Ireland.
In 1806 the State reopened the school of law at Poitiers and later the faculties of literature and science. These faculties were raised to the rank of a university in 1896. From 1872 to 1875 Cardinal Pie was engaged in re-establishing the faculty of theology. As a provisional effort he called to teach in his Grand Séminaire three professors from the Collegio Romano, among them Fr. Clement Schrader, S.J., formerly a professor at Vienna and the commentator of the Syllabus, who died at Poitiers in 1875. The effort does not appear to have borne fruit, a casualty of the 1905 Law of the Separation of Church and State.
^Catholiques en Poitou: Site officiel du diocèse de Poitiers, Ordinations, retrieved: 2017-05-05.
^Duchesne, p. 79, and see p. 82: "Tout ce qu'on peut dire, en somme, c'est que quelques-uns des premiers noms de la liste se retrouvent parmi ceux des saints que l'église de Poitiers honorait, soit qu'ils eussent vécu dans son sein, soit qu'elle en eût adopté le culte. De tout cela, il ne ressort pour notre liste aucune vérification sérieuse."
^Georges Goyau, "Poitiers,"The Catholic Encyclopedia Vol. 12. (New York: Robert Appleton Company, 1911), retrieved: 2017-05-03. May 2017. See: Brigitte Waché, "Les relations entre Duchesne et dom Chamard," in: Mgr Duchesne et son temps. Rome, (École Française de Rome, 1975) pp. 257–269.
^P. Jaffé and S. Loewenfeld, Regesta pontificum Romanorum, II, pp. 52–53. Bishop Gilbert is addressed on April 14 in a papal mandate along with the other French bishops in attendance: Jaffé-Loewenfeld, no. 9240.
^K. J. Hefele, Histoire des conciles Tome VII (tr. Delarc) (Paris: Adrien Le Clere 1872), pp. 314–318.
^The story is told in detail by Otto of Frising, in his Gesta Friderici Imperatoris, Book I, chapters 56 and 57, in: Monumenta Germaniae HistoricaScriptorum Tomus XX (Hannover: Hahn 1868), pp. 382–384.
^A church in Poitiers was named in honor of a S. Agon, from which came the assumption that he had been a bishop. He was honored in the Basilica of S. Hilarius on 24 August. Gallia christiana II, p. 1137, 1223. Cf. Duchesne, pp. 77, 82.
^The five bracketed bishops occur in the 12th century list, but are otherwise undocumented. They are omitted by Duchesne.
^Duchesne, p. 82 no. 2, points out that an Adelfius episcopus de Ratiate (Retz), who in another version of the subscription list is ex civitate Pectavos Adelfios episcopus, was present at the Council of Orléans in 511, and an Adelfius was represented at the Council of Orléans in 533 (though without mention of his See). C. De Clercq, Concilia Galliae, A. 511 – A. 695 (Turnhout: Brepols 1963), pp. 13 and 19; 103.
^Bishop Daniel was present at the Council of Orléans in 541 (but not at the Council of Orléans in 538). Duchesne, p. 83 no. 4. De Clercq, pp. 143 and 146.
^Ennoaldus was present at the Council of Paris in 614. De Clercq, p. 281.
^Joannes was present at the Council of Clichy in 627. De Clercq, p. 297.
^Dido was the maternal uncle of Leodegarius (Léger), Bishop of Autun (who was brought up in Poitiers and became Archdeacon), and of Gerinus Count of Poitou. Duchesne, p. 84 no. 13. Jean-Michel Picard (1991). Ireland and Northern France, AD 600-850. Dublin: Four Courts Press. pp. 27–28, 39. ISBN978-1-85182-086-3.
^Ansoald: Gallia christiana II, pp. 1153–1154. J. Tardif, "Les chartes mérovingiennes de Noirmoutier," Nouvelle revue historique de droit franc̜ais et étranger (in French). 22. Paris: L. Larose. 1898. pp. 763–790, at 768–783. Ulrich Nonn, "Zum 'Testament' Bischof Ansoalds von Poitiers," Archiv für Diplomatik (1972), 413-418 (in German). Paul Fouracre, "Merovingian History and Merovingian Hagiography." Past & Present, no. 127 (1990): 3-38, at 14-15; https://www.jstor.org/stable/650941.
^Eparchius: Gallia christiana II, pp. 1154–1155. Duchesne, p. 85 no. 15.
^Fridebertus: Gallia christiana II, p. 1156. Gams, p. 601 column 2.
^Ebroin: He presided at the second Concilium Vernense in 844: J.D. Mansi (ed.), Sacrorum conciliorum nova et amplissima collectio, io novissima, Tomus XIV (Venice 1759), p. 809. Gallia christiana II, pp. 1156–1158. Duchesne, p. 86 no. 25.
^Engenoldus, or Ingenaldus, or Ingenardus was present at the II Concilium Tullense (apud Tusiacum villam) in 860, and at the Assembly of the three Kings of the Franks in 862. J.-D. Mansi, ed. (1770). Sacrorum conciliorum nova et amplissima collectio (in Latin). Tomus XV (io novissima ed.). Venice: A. Zatta. pp. 561, 633 and 636. Engenoldus also subscribed the synodal letter to Pope Hadrian I of the Concilium Duziacense in 871: Mansi (ed.), Sacrorum conciliorum nova et amplissima collectio, io novissima, Tomus XVI (Venice 1761), p. 678. Gallia christiana II, pp. 1158–1159.
^Hecfridus received a confirmation of the privileges of the diocese of Poitiers from Pope John VIII on 30 August 878: Mansi (ed.), Sacrorum conciliorum nova et amplissima collectio, io novissima, Tomus XVII (Venice 1762), pp. 351–352. Gallia christiana II, p. 1159.
^Froterius: Gallia christiana II, pp. 1159–1160. Gams, p. 602.
^Petrus was former Archdeacon and Provost of S. Peter in Poitiers, appointed by Froterius II. Gallia christiana II, pp. 1160–1161.
^Gislebert had previously been Archdeacon of Poitiers. Gallia christiana II, pp. 1161–1162.
^Grimoard had been Abbot of Alleux before being elected by the Chapter of Poitiers. He was consecrated on 26 January 1141 by Archbishop Gaufridus de Loratorio of Bordeaux, though King Louis VII refused to allow him to occupy his seat, apparently because he was consecrated without having first obtained the royal sanction: Marcel Pacaut (1957). Louis VII et les élections épiscopales dans le royaume de France (in French). Vrin. pp. 92–93. ISBN978-2-7116-0592-7. On 20 May 1141, Pope Innocent II wrote to Bishop Grimoard, noting his recent accession and exhorting him to carry out his mission in praiseworthy fashion. J. P. Migne (ed.), Patrologiae Latinae cursus completus Tomus CLXXIX (Paris 1899), p. 547; P. Jaffé, Regesta pontificum Romanorum I, second ion (Leipzig 1885), p. 897 no. 8145. Gallia christiana II, pp. 1173–1175.
^Gilbert died in the thirteenth year of his pontificate. Gallia christiana II, pp. 1175–1178. Gams, p. 602 column 1. Auguste Berthaud, Gilbert de la Porrée, évêque de Poitiers, et sa philosophie 1070-1154 (Poitiers, 1892). Nikolaus Martin Häring, "The Case of Gilbert de la Porrée, Bishop of Poitiers, 1142-1154," Medieval Studies 13 (1951), pp. 1–40. Nikolas Häring (1966). Gilbert of Poitiers: The Commentaries on Boethius. Toronto: Pontifical Institute of Mediaeval Studies. pp. 4–13. ISBN978-0-88844-013-6.
^Calo had been Archdeacon of Thouars in the Church of Poitiers. Gallia christiana II, pp. 1178–1179.
^Laurentius had been Dean of the Cathedral Chapter of Poitiers by 1154. Gallia christiana II, p. 1179.
^Guillaume Tempier had been a Canon Regular in the abbey of Saint Hilaire de Cella (Poitiers). Roger of Hoveden [William Stubbs (or), Chronica Magistri Rogeri de Houedene Vol. IV (London 1871), p. 24] says of him that, although his life appeared to people to be really reprehensible, nevertheless after his death he shone forth with miracles. Gallia christiana II, p. 1181.
^Ademar was elected after a six-month vacancy in a contested election. The matter was referred to the Pope, and Ademar set out for Rome, where Innocent III settled the matter and consecrated him personally. See the letter of Innocent III of April 6, 1198. Gallia christiana II, pp. 1181–1182. A. Potthast, Regesta pontificum Romanorum I (Berlin 1874), p. 9 nos. 73-74.
^Blaron: Gallia christiana II, pp. 1182–1183. Eubel, I, p. 399.
^Guillaume Prévost: He died after 3 April 1224 and before 18 November 1224, when his successor Philippe Balleos is already installed. The necrology of the Dominicans of Poitiers put the date on 3 August. Louis de la Boutetière, "Note sur Guillaume Prévost, évêque de Poitiers (1214–1224)," Bulletins de la Société des antiquaires de l'Ouest. XIII serie (in French). Paris: Derache. 1874. pp. 56–59.
^Balleos: Gallia christiana II, pp. 1183–1184. Eubel, I, p. 399.
^Jean de Melun: Gallia christiana II, pp. 1184–1185. Eubel, I, p. 399.
^Châteauroux: Gallia christiana II, pp. 1185–1186. Eubel, I, p. 399.
^Gualterus de Bruges had been Provincial of the French Province of the Franciscans before his appointment to Poitiers. He resigned in 1306, on or before 4 November, and died on 21 January 1307. Jean-François Dreux-Duladier (1842). Bibliothèque historique et critique du Poitou (in French). Tome I. Niort: Robin. pp. 53–56. Ephrem Longpre, O.F.M., Quaestiones disputatae du B. Gauthier de Bruges (Louvain, 1928), pp. i–iii (in French). Andre Callebaut, O.F.M., "Les provincaux de la province de France," Archivum Franciscanum Historicum 10 (1917), pp. 337–340. Benoît Patar (2006). Dictionnaire des philosophes médiévaux (in French). Longueuil Quebec: Les Editions Fides. p. 145. ISBN978-2-7621-2741-6.
^Arnaud d'Aux was a Gascon, of La Romieu or Larromieu, in the diocese of Cahors, and a cousin of Pope Clement V. He was Chamberlain of the Holy Roman Church (1312–1319). He was named a cardinal by Pope Clement on 23 or 24 December 1312, and transferred to the suburbicarian diocese of Albano. While still Bishop of Poitiers he had been sent to England as a papal legate on 14 May 1312 to King Edward II after the murder of Piers Gaveston; he was still there in November 1313. He died on 14 August 1320. Gallia christiana II, pp. 1188–1190. Eubel, I, pp. 14 no. 17; 399.
^Fortius was the nephew of Cardinal Arnaud d'Aux, by whom he was consecrated a bishop on 17 October 1316. Gallia christiana II, pp. 1190–1191. Eubel, I, p. 399 with note 5.
^Jean de Lieux: Gallia christiana II, pp. 1191–1192. Eubel, I, p. 399.
^Aimery de Mons, a native of the diocese of Poitiers, was a Doctor in utroque iure (Civil and Canon Law). 4 June 1363 is the date of his solemn entry into Poitiers. His tombstone says he died on 17 March 1370. Gallia christiana II, pp. 1191–1192. Eubel, I, p. 399.
^Born at Malsec in the diocese of Tulle, Guy de Malsec was the nephew of Pope Gregory XI. He obtained a degree of Doctor of Canon Law, which led to a position as a papal Referendary (judge). He was Cantor in the Cathedral Chapter of Langres in 1351, and Archdeacon of Corbaria in the Church of Narbonne. He became Bishop of Lodève for a short time (1370–1371) before being promoted to the See of Poitiers. He was named a cardinal on 20 December 1375, and appointed suburbicarian Bishop of Palestrina in 1383. He was a leading figure in the Council of Pisa (1409) and the election of Pope Alexander V. From 1409 to 1411 he was Administrator of the diocese of Agde. He died in Paris on 8 March 1412. Charles François Roussel (1879). La diocèse de Langres: histoire et statistique (in French). Tome IV. Langres: J. Dallet. p. 83. Eubel, I, pp. 22 no. 17; 76 with note 9; 310; 399.
^A native of the diocese of Limoges, Bertrand de Maumont (not de Cosnac; Maumont is a village in Haute-Vienne) had previously been Bishop of Tulle (1371–1376). He consecrated the cathedral in Poitiers on 17 October 1379. Gallia christiana II, pp. 1194–1196. Auber, II, pp. 120–130. Eubel, I, p. 399, 505.
^Simon de Cramaud had previously been Bishop of Agen (1382-1383), and then Bishop of Béziers (1383–1385). He was named Patriarch of Alexandria on 17 March 1391. He was named Archbishop of Reims on 2 July 1409. He was named a cardinal on 13 April 1413 by Pope John XXIII. He died on 15 December 1422. Gallia christiana II, pp. 1194–1196. Eubel, I, pp. 33, 77, 82, 138, 399, 419. Howard Kaminsky, "The Early Career of Simon De Cramaud," Speculum 49, no. 3, 1974, pp. 499–534, www.jstor.org/stable/2851753. Bernard Guenée (1991). Between Church and State: The Lives of Four French Prelates in the Late Middle Ages. University of Chicago Press. pp. 154–155, 175–179, 205–211, 223–224, 251. ISBN978-0-226-31032-9.
^Louis de Bar was the son of Robert, Duc de Bar, and Marie, the daughter of King John of France. Gallia christiana II, pp. 1196–1197. Eubel, I, p. 399. D. De Smyttère, "Enfants du duc de Bar Robert et de la princesse Marie," in: Mémoires de la Société des lettres, sciences et arts de Bar-le-Duc. deuxième série (in French). Tome III. Bar-le-Duc: L. Philipona. 1884. pp. 307–326.
^A Doctor of Canon Law, Ythier de Mareuil had previously been Cantor in the Cathedral Chapter of Poitiers, and then Bishop of Le Puy (Aniciensis) (1382–1395). Gallia christiana II, pp. 720, 1197. Eubel, I, pp. 91, 399.
^Bishop Gérard de Montaigu, the brother of Jean, Archbishop of Sens, had been Chancellor of Jean, Duc de Berry. He was appointed Bishop of Poitiers by Pope Benedict XIII. He was transferred from Poitiers to the diocese of Paris on 24 July 1409 by Pope Alexander V. He died on 25 September 1420. Gallia christiana II, pp. 1197–1198. Eubel, I, pp. 391, 399.
^Pierre Trousseau had been Archdeacon of Paris. He was transferred from Poitiers to Reims on 2 May 1413, and died on 16 December 1413. Gallia christiana II, p. 1198. Eubel, I, p. 399, 419.
^Hugh de Combarel had been Bishop of Tulle (1419–1422) and Bishop of Béziers (1422–1424). Gallia christiana II, pp. 1198–1199. Eubel, I, pp. 138, 399, 505.
^Guillaume Gouge was the Chancellor of Jean, Duke of Burgundy. He was elected by the Dean and Chapter of Poitiers, and confirmed on 17 May 1441 by Archbishop Henri d'Avaugour of Bourges. His bulls were passed on 15 December 1441. Gallia christiana II, p. 1199. Eubel, II, p. 216.
^Jacques Juvénal des Ursins had been Archbishop of Reims (1444–1449). On 3 March 1449 he was named both titular Patriarch of Antioch and Bishop of Poitiers. Michiel Decaluwe; Thomas M. Izbicki; Gerald Christianson (2016). A Companion to the Council of Basel. Leiden-Boston: Brill. pp. 389, 409. ISBN978-90-04-33146-4. Roger Aubert, "Jouvenel des Ursins (Jacques)," Dictionnaire d'histoire et de géographie ecclésiastiques 28 (2003), p. 370. Eubel, II, pp. 216, 222.
^Gallia christiana II, p. 1200. Eubel, II, pp. 155 with note 3; 216.
^Jean du Bellay had been Bishop of Frejus (1455–1462). Gallia christiana II, p. 1201. Eubel, II, pp. 155, 216.
^Guillaume was a Protonotary Apostolic and Bishop-Elect of Évreux. Gallia christiana II, p. 1201-1202. Eubel, II, pp. 148 with note 5; 216.
^Pierre d'Amboise was the brother of Cardinal Georges d'Amboise. Gallia christiana II, p. 1202. Eubel, II, p. 216 with note 3; III, p. 273 with note 2. Francois Villard, "Pierre d'Amboise, évêque de Poitiers (1481–1505)," Mélanges René Crozet Tome II (Poitiers 1966), pp. 1381–1387.
^Claude de Husson had been Bishop of Séez (1503–15 He was appointed to Poitiers on 10 September 1507, but faced opposition from another candidate (who died in 1510). Gallia christiana II, p. 1203. Eubel, II, p. 227; III, p. 273 with note 4.
^Grammont had been French Ambassador to the Pope. He had been Archbishop of Bordeaux (1529–1530. He was named a cardinal by Pope Clement VII on 8 June 1530. Gallia christiana II, pp. 1203–1204. Eubel, III, pp. 21, 273–274.
^Longwy was Bishop of Langres (1528– ) He made his solemn entry into Poitiers in 1541. He died on 9 August 1561. Gallia christiana II, p. 1204. Eubel, III, pp. 22 no. 31; 274.
^Jean d'Amoncourt was a Doctor in utroque iure (Civil and Canon Law). Gallia christiana II, p. 1204. Eubel, III, p. 274.
^Peyrusse was transferred to the diocese of Langres on 19 December 1569. Gallia christiana II, p. 1204. Eubel, III, p. 226, 274.
^Du Fay: Gallia christiana II, p. 1205. Gams, p. 602 column 2. Eubel, III, p. 274.
^Saint-Belin: Gallia christiana II, p. 1205. Jean-Francois Dreux du Radier (1746). Bibliothéque Historique, Et Critique Du Poitou (in French). Tome premier. Paris: Ganeau. pp. 52–53. Gams, p. 603 column 1. Eubel, III, p. 274. Favreau and Pon, p. 114, 130-138.
^Roche-Posay: Gallia christiana II, pp. 1206–1207. Gauchat, IV, p. 280. Marcelle Formon, "Henri-Louis Chasteigner de la Rocheposay, évêque de Poitiers (1612–51)," Bulletin de la Société des Antiquaires de l'Ouest 4th series, 3 (1955), pp. 169–231.
^Barberini, a nephew of Pope Urban VIII, who was in exile from Rome after his uncle's death, having broken publicly from the new Pope Innocent X, was appointed Bishop of Poitiers by King Louis XIV, but he was unable to obtain his bulls of institution. He was therefore only civil administrator. He participated in the Conclave of 1655 as Cardinal Camerlengo S.R.E., which elected Pope Alexander VII. He was named suburbicarian Bishop of Frascati on 11 October 1655, and on 24 October 1655 he was finally consecrated a bishop by his uncle, Cardinal Antonio Barberini, the elder. He died on 3/4 August 1671. Gallia christiana II, p. 1208.
^Clérembault was a Doctor in utroque iure (Civil and Canon Law). He was nominated by King Louis XIV on 1 September 1657, and approved (preconised) by Pope Alexander VII on 1 April 1658. Gauchat, IV, p. 280 with note 3.
^Fortin de La Hoguette was transferred to the diocese of Sens on 21 January 1692. He died on 28 November 1715. Jean, pp. 142–143. Ritzler-Sefrin, V, pp. 314 with note 3; 354 with note 4.
^Baglion de Saillant had previously been Bishop of Tréguier (1679–1692). He was nominated to the diocese of Poitiers by King Louis XIV on 26 April 1686, but did not receive his bulls from Pope Innocent XI due to a break in relations between the Papacy and France and the excommunication of Louis XIV. Jean, p. 144. Ritzler-Sefrin, V, pp. 314 with note 4; 387 with note 3.
^Girard was born in Clermont, and held a doctorate in theology (Paris); he was a fellow of the Sorbonne. Jean, pp. 144–145. Ritzler-Sefrin, V, p. 314 with note 5.
^Born in 1654, La Poype de Vertrieu was Comte de Lyon. Jean, p. 144. Ritzler-Sefrin, V, p. 314 with note 6.
^Courcenay was a nephew or coursin of Bishop La Poype de Vertrieu. He was named his Coadjutor and titular Bishop of Tlos, from 8 January 1721. Jean, pp. 144–145. Ritzler-Sefrin, V, p. 314 with note 7; 382.
^Caussade was a native of Périgueux, and held a doctorate in theology (Paris). For six years he was Theological Canon and Vicar General of Tarbes. He resigned the diocese of Poitiers on 12 March 1759, and was appointed Bishop of Meaux on 9 April 1759. He died on 19 February 1769. Jean, p. 145. Ritzler-Sefrin, VI, pp. 284 with note 3; 337 with note 2.
^Beaupoil was born in the diocese of Limoges, and held a Licenciate in theology (Paris). He served as Vicar General of Rouen for nine years. He died in exile in Freibourg im Breisgau in 1798. Jean, p. 145. Ritzler-Sefrin, VI, p. 337 with note 3.
^Durfort, a native of the diocese of Le Mans, studied at the French seminary in Rome. He was a priest of Mans, and an honorary Canon of Rennes. He was previously Bishop of Langres (1911–1918).
^Wintzer was born in Rouen in 1956. He holds the degree of Master in dogmatic theology. He was named Auxiliary Bishop of Poitiers on 2 April 2007, and consecrated on 19 May. He became Administrator of the diocese on 2 February 2011, and was named Archbishop of Poitiers on 13 January 2012. Catholiques en Poitou: Site officiel du diocèse de Poitiers, Mgr Pascal Wintzer, retrieved: 2017-05-05.(in French)
Vallière, Laurent (ed.) (2008): Fasti Ecclesiae Gallicanae. Répertoire prosopographique des évêques, dignitaires et chanoines des diocèses de France de 1200 à 1500. X. Diocèse de Poitiers. Turnhout, Brepols. (in French) [A convenient summary list of the bishops is given at p. 429.]