Ancient Diocese of Saint-Omer

The former French Catholic diocese of Saint-Omer existed from 1559 until the French Revolution. Its see at Saint-Omer, in the modern department of Pas-de-Calais, was created as a reaction to the destruction of the see of Thérouanne, by military action in the wars of the Emperor Charles V. It then became a suffragan of the Archdiocese of Cambrai in 1559.

By the Concordat of 1801, the diocese of Saint-Omer was united with the diocese of Arras and the diocese of Boulogne, to form an enlarged diocese of Arras.

Bishops

 * Guillaume de Poitiers 1561
 * Gérard de Haméricourt 1563-1577
 * Jean Six 1581-1586
 * Jacques de Pamèle 1587
 * Jean de Vernois, O.P., 1591-1599
 * Jacques Blaseus, O.F.M. Rec., 1600-1618 (previously bishop of Namur)
 * Paul Boudot 1618-1626 (then bishop of Arras)
 * Pierre Paunet, O.F.M., 1628-1631
 * Christophe de Morlet 1632-1633
 * Christophe de France 1635-1656
 * Ladislas Jonart 1662-1671 (then archbishop of Cambrai)
 * Jacques-Théodore de Bryas 1672-1675 (then archbishop of Cambrai)
 * Jean Charles de Longueval 1676
 * Pierre Van Den Perre 1577
 * Armand-Anne-Tristan de La Baume de Suze 1677
 * Louis-Alphonse de Valbelle 1677-1708 (previously bishop of Alet)
 * François de Valbelle de Tourves 1708-1727
 * Joseph-Alphonse de Valbelle de Tourves 1727-1754
 * Pierre-Joseph de Brunes de Monlouet 1754-1765 (previously bishop of Dol)
 * Louis-François-Marc-Hilaire de Conzié 1766-1769 (then bishop of Aire)
 * Joachim-François-Mamert de Conzié 1769-1775 (then archbishop of Tours)
 * Jean-Auguste de Chastenet de Puységur 1775-1778 (then bishop of Carcassonne)
 * Alexandre-Joseph-Alexis de Bruyère de Chalabre 1778-1790 (1796)