The Diocese of Saint-Brieuc and Tréguier is a Latin Church diocese of the Catholic Church in France. The diocese comprises the department of Côtes d'Armor in the Region of Brittany. The diocese is cur

The Diocese of Vannes is a Latin Church diocese of the Catholic Church in France. It was established in the 5th century. The seat of the bishop is Vannes Cathedral, in the city of Vannes, on the south