The former Breton and French Catholic diocese of Saint-Malo existed from at least the seventh century until the French Revolution

French Revolution

The French Revolution , sometimes distinguished as the 'Great French Revolution' , was a period of radical social and political upheaval in France and Europe. The absolute monarchy that had ruled France for centuries collapsed in three years...

. Its see was at Aleth, to a point in the twelfth century, when it moved to Saint-Malo

Saint-Malo

Saint-Malo is a walled port city in Brittany in northwestern France on the English Channel. It is a sub-prefecture of the Ille-et-Vilaine.-Demographics:The population can increase to up to 200,000 in the summer tourist season...

. Its territory extended over some of the modern departments of Ille-et-Vilaine

Ille-et-Vilaine

Ille-et-Vilaine is a department of France, located in the region of Brittany in the northwest of the country.- History :Ille-et-Vilaine is one of the original 83 departments created during the French Revolution on March 4, 1790...

, Côtes-d'Armor

Côtes-d'Armor

Côtes-d'Armor is a department in the north of Brittany, in northwestern France.-History:Côtes-du-Nord was one of the original 83 departments created during the French Revolution on 4 March 1790. It was created from part of the former province of Brittany. Its name was changed in 1990 to...

 and Morbihan. Until the 860s it was often termed bishopric of Poutrocoet

Poutrocoet

Poutrocoet was an early medieval pagus in Brittany. The term "Poutrocoet" is Breton, and contemporaries translated it literally into Latin as pagus trans silvam, the "country beyond the forest", as in certain charters in the cartulary of Redon Abbey...

.

Bishops of Aleth

• Aaron
• Suliac
• Saint Malo or Maclovius 487-565
• Gurval
• Colfin oder Colaphin
• Armael oder Armel
• Enogat
• Maëlmon, ca. 650
• Godefroi or Geofroi c. 656
• Oedmal
• Hamon I.
• Noedi
• Ritwal
• Tutamen
• Ravili
• Bili I.
• Meen or Moene
• Ebon or Edon
• Guibon or Guibert
• Hamon II.
• Walter
• Cadocanan
• Rivallon I.
• Judicaël I.
• Réginald or Regimond
• Menfenic
• Budic or Benedikt
• Docmaël or Idomaël
• Johannes
• Walter
• Hélogard or Haelocar 811-816
• Ermorus or Ermor 833-834
• Iarnwaltus or Jarnuvalt 835-837
• Main, Maen or Mahen 840-846
• Salocon c. 848
• Rethwalatrus or Retuvalart 857-867
• Ratvomo or Ratwili 867-872
• Bili II. ca. 880
• Salvator (tenth century)
• Rouaud oder Raoul um 990
• Vakanz 999-1028
• Hamon III. c. 1028
• Martin c. 1054
• Vakanz 1054-1062
• Renaud or Rainaud c. 1062
• Vakanz 1062-1085
• Daniel I. c. 1085
• Benedict (II.)
• Judicaël II. 1089-1111
• Rivallon II. 1112-1118
• Daniel II. c. 1120
• Donoald 1120-1143

Bishops of Saint-Malo

• Jean de Châtillon
  John of the Grating
  John of the Grating was a Cistercian Bishop of Aleth. John was born in Brittany, in 1098 he joined Clairvaux, where he was professed by St. Bernard. He would go on to found Sainte-Croix de Guingamp and Saint-Jacques de Montfort Abbeys, after his appointment as Bishop in 1144...
  
   1146-1163
• Albert or Aubert 1163-1184
• Pierre Giraud or Géraud 1184-1218
• Raoul or Rudolf 1219-1230
• Geoffroi de Pontual 1231-1255
• Nicolas de Flac 1254-1262
• Phillipe de Bouchalampe 1263
• Simon de Cliçon or Clisson 1264-1286
• Robert du Pont 1287-1309
• Raoul Rousselet 1310-1317
• Alain Gonthier 1318-1333
• Yves le Prévôt de Bois Boëssel 1333-1348
• Guillaume Mahé 1348-1349
• Pierre Benoît or de Guémené 1349-1359
• Guillaume Poulart 1359-1374
• Josselin de Rohan 1375-1389
• Robert de la Motte d'Acigné 1389-1423
• Guillaume de Montfort 1423-1432
• Amaury de la Motte d'Acigné 1432-1434
• Pierre Piédru 1434-1449
• Jacques d'Espinay-Durestal 1450
• Jean L'Espervier 1450-1486
• Pierre de Montfort de Laval 1486-1493
• Guillaume Briçonnet
  Guillaume Briçonnet (Cardinal)
  Guillaume Briçonnet was a French Cardinal.-Life:He was a younger son of Jean Briçonnet, Lord of Varennes, in Touraine, Secretary to the king and collector-general of Customs...
  
   1493-1513
• Denis Briçonnet 1513-1535
• François Bohier 1535-1569
• Guillaume Ruzé 1570-1572
• François Thomé 1573-1586
• Charles de Bourgneuf 1586-1596
• Jean du Bec 1598-1610
• Guillaume le Gouverneur 1610-1630
  • Octavien de Marillac Michel de Paris 1630
• Achille de Harlay de Sancy 1631-1644
• Ferdinand de Neufville 1644-1657
• François de Villemontée 1658-1670
• Sébastien de Guémadeuc 1671-1702
• Vincent-François des Maretz 1702-1739
• Jean-Joseph de Fogasses 1739-1767
• Antoine-Joseph des Laurents 1767-1785
• Gabriel Cortois de Pressigny 1785-1790
  • Siméon L'Archant de Grimouville 1817