The Cathedral of the Assumption of Notre-Dame was served by a chapter composed of four dignities (dignités; not dignitaries): the dean, the archdeacon, the provost, and the sacristan. There were in addition nine canons (one of whom was called the Canon Theological and another Capiscol. Gap was unique among the churches of Province, in that its Cathedral Chapter was not headed by its provost, but by its dean. In 2017, there was a Dean and ten Canons. Bishops to 1000 [Saint Demetrius (end of 1st century)] Saint Tigrides (4th century ?) Saint Remedius (394–419) [Saint Constantinus (439)] Constantius (517–529) Vellesius (541–554) Sagittarius (560?–578) Aredius of Gap (579–610?) Valatonius (610?–614) Potentissimus (c. 647–653) Symphorianus (700?) Donadeus (788) Biraco (c. 876–879) Castus (950) Hugo (I) (971 – after 988) 1000 to 1300 Féraud (1010–1040) Rodolphe (1044–1050) Ripert (1053–1060) Arnulphus (Arnoux) (c. 1065 – 1070s) Laugier I (1079–1081) Odilon (1085?) Isoard (1090?–1105) Laugier II (1106–1122) Pierre Grafinel (1122–1130) Guillaume I (1131–1149) Raimond (1150–1156) Grégoire (1157–1180) Guillaume II (1180–1188) Frédéric (c. 1188–c. 1198) Guillaume de Gières (c. 1199–1211) Hugues (II) (c.1215 – 1217) Guigo (1217–1219) Guillaume d'Esclapon (1219–1235), abbé de Lérins Robert, O.P. (1235–1251) Othon de Grasse (1251–1281) Raimond de Mévouillon (1282–1289) Geofroi de Lincel (1289–1315) 1300 to 1600 Olivier de Laye (1315–1316) Bertrand de Lincel (1316–1318) Guillaume d'Étienne (1318–1328) Dragonnet de Montauban (1328–1349) Henri de Poitiers (1349–1353) Gilbert de Mendegaches (1353–1357) Jacques de Deaux (1357–1362) Guillaume Fournier (1362–1366) Jacques Artaud (1366–1399) Raimond de Bar (1399–1404) Jean des Saints (1404 – 20 August 1409) Antoine Juvénis (1409–1409?1411) Alessio di Siregno, O.F.M. (20 August 1409 – 27 August 1411 Laugier Sapor (1411–1429) Guillaume de Forestier (11 February 1429 – 1442) Gaucher de Forcalquier (17 December 1442 – 5 April 1484) Gabriel de Sclafanatis (1484–1526) Gabriel de Clermont (1526–1571) Pierre Paparin (1572–1600) 1600 to 1800 Charles-Salomon du Serre (1600–1637) Arthur de Lionne (1639–1662) Pierre Marion (1662–1675) Guillaume de Meschatin (1677–1679) Victor-Augustin de Méliand (27 May 1680 – 27 June 1684) Charles-Béningne Hervé (1692–1705) François Berger de Malissoles (3 April 1706 – death 21 September 1738) Claude de Cabanes (22 June 1739 – death 10 September 1741) Jacques-Marie de Caritat de Condorcet (20 December 1741 – 16 December 1754) Pierre-Annet de Pérouse (1754–1763) François de Narbonne-Lara (20 February 1764 – 18 April 1774) François-Gaspard de Jouffroy de Gonsans (28 February 1774 – 1 June 1778) Jean-Baptiste-Marie de Maillé de la Tour-Landry (30 March 1778 – 25 June