The Diocese of Vaison (Latin: dioecesis Vasionensis) was a Roman Catholic diocese in France, suppressed in 1801, with its territory transferred to the Diocese of Avignon.^[1] It had been one of nine dioceses in the ecclesiastical province presided over by the archbishop of Arles, but a later reorganization placed Vasio, i.e. today's Vaison-la-Romaine, under the archbishop of Avignon. Jurisdiction inside the diocese was shared between the bishop and the Comte de Provence (Count of Provence), higher justice and the castle belonging to the Comte, and civil justice and all other rights belonging to the bishop. The cathedral was served by a chapter^[2] which had four dignities: the provost (praepositus), the archdeacon, the sacristan, and the precentor. There were also six canons, each of whom had a prebend attached to his office.^[3]

This article is missing information about the history of the diocese from 600 to 1600. Please expand the article to include this information. Further details may exist on the talk page. (July 2016)

The oldest known bishop^{[4][unreliable source?]} of the See is Daphnus, who assisted at the Council of Arles (314).

Others were St. Quinidius (Quenin, 556-79), who resisted the claims of the patrician Mummolus, conqueror of the Lombards; Joseph-Marie de Suares (1633–66), who died in Rome in 1677 while filling the office of Custode of the Vatican Library and Vicar of the Basilica of St. Peter, and who left numerous works.^[5]

St. Rusticala (551–628) was abbess of the monastery of St. Caesarius at Arles.

William Chisholme (II), former bishop of Dunblane, became bishop of Vaison-la-Romaine in 1566 or 1569.

Two councils which dealt with ecclesiastical discipline were held at Vaison in 442 and 529,^[6] the latter a provincial council under the presidency of Caesarius of Arles.

The bishopric was suppressed^[7] as part of the Napoleonic Concordat of 1801, between Consul Bonaparte and Pope Pius VII, and the territory of Vaison was incorporated into the diocese of Avignon and the diocese of Valence. In 2009 the title of Vasio was revived as a titular See.^[8]

• Catholic Church in France
• List of Catholic dioceses in France

• Gams, Pius Bonifatius (1873). Series episcoporum Ecclesiae catholicae: quotquot innotuerunt a beato Petro apostolo. Ratisbon: Typis et Sumptibus Georgii Josephi Manz. p. 517.
• Eubel, Conradus, ed. (1913). Hierarchia catholica, Tomus 1 (second ed.). Münster: Libreria Regensbergiana. (in Latin) p. 263.
• Eubel, Conradus, ed. (1914). Hierarchia catholica, Tomus 2 (second ed.). Münster: Libreria Regensbergiana. (in Latin) p. 244.
• Eubel, Conradus (ed.); Gulik, Guilelmus (1923). Hierarchia catholica, Tomus 3 (second ed.). Münster: Libreria Regensbergiana. {{cite book}}: |first1= has generic name (help) p. 327.
• Gauchat, Patritius (Patrice) (1935). Hierarchia catholica IV (1592-1667). Münster: Libraria Regensbergiana. Retrieved 2016-07-06. p. 360.
• Ritzler, Remigius; Sefrin, Pirminus (1952). Hierarchia catholica medii et recentis aevi V (1667-1730). Patavii: Messagero di S. Antonio. Retrieved 2016-07-06. pp. 405–406.
• Ritzler, Remigius; Sefrin, Pirminus (1958). Hierarchia catholica medii et recentis aevi VI (1730-1799). Patavii: Messagero di S. Antonio. Retrieved 2016-07-06. p. 433.
• Sainte-Marthe, Denis de (1715). Gallia christiana, in provincias ecclesiasticas distributa (in Latin). Vol. Tomus primus. Paris: Coignard. pp. 919–940.

• Boyer, Louis-Anselme (1731). Histoire de l'église cathédrale de Vaison, avec une chronologie de tous les évêques qui l'ont gouvernée et une chorographie ou description en vers latins et français des villes, bourgs, villages... (in French). Vol. 2 volumes. Avignon: Chave.
• Duchesne, Louis (1907). Fastes épiscopaux de l'ancienne Gaule: I. Provinces du Sud-Est. Paris: Fontemoing. second edition (in French) pp. 262–263.
• Labande, Léon-Honoré (1905). La cathédrale de Vaison: étude historique et archéologique (in French). Caen: H. Delesques.
• Sautel, Joseph (1926). Vaison dans l'Antiquité (in French). Vol. 3 vols and Supplement. Avignon: Aubanel-Rullière.

44°14′N 5°04′E / 44.24°N 5.07°E / 44.24; 5.07