Ancient Diocese of Couserans

[5] According to Louis Duchesne, he should be identified with Lycerius whom the Gallia Christiana places later in the list of bishops.

Lycerius was patron saint of St-Lizier, the town in which the bishops of Couserans had their official residence.

The historian Pierre de Marca (1643–52), a native of Béarn and President of the Parliament of Navarre, was subsequently Bishop of Toulouse and Archbishop of Paris.

[6] Up until the administration of Bishop Bernard de Marmiesse (1654–1680), the town of Saint-Lezier had two co-cathedrals, the Cathedral of Notre-Dame-de-la-Sède in the upper town next to the Episcopal Palace, and the Cathedral of St.-Lizier farther down to the south.

Bishop de Marmiesse united the two chapters and based them in the Cathedral of Notre-Dame-de-la-Sède; it was composed of the Archdeacon, two Precentors, two Sacristans, two Operarii, the Aumonier, twelve Canons, and two Vicarii perpetui; there were twenty-four prebends.