List of bishops of the Roman Catholic Diocese of Sion:
Late Antiquity Bishops of Agaunum (Octodurum) FromToBishopNotesfl. 380s Theodore fl. 440 Salvius/Silvius fl. 490 Prothais 516(?)Theodore II(?) 517 Constantinus 549 Rufus 565 Agricola
Early Middle Ages
FromToBishopNotes 585 Heliodorus 613 614 Leudemond 647 653 Prothais 673 690 Saint Aimé 762 765 Willicar 786/8 796/8 Altheus fl. 805 Theodore III(?) According to 12th-century legend, secular power was granted to the bishops of Sion by Charlemagnefl. 824 Adalongus 825857Heyminus 877899/900Waltherius 932 Asmundus fl. 940 Manfredus (?) 983984/5Amizo
Prince-bishops of Sion
Middle Ages FromToBishopNotes993/41018/20Hugues First prince-bishop, granted secular power by Rudolph III of Burgundy in c. 99910341053/4Aymon of SavoySucceeded his brother Buchardus as Abbot of St Maurice in 1049 or 105010541087-1090Ermenfroifl. 1092 Gausbertus11071116Vilencus11351138Boson11381150Saint Guérin11501162(?)Louis11621168 (?)Amédée of La Tour11761177Guillaume of Blonay11791181 or 1184Conon1184(?)1196Guillaume of Candie11961203Nantelme of Écublens12031205Guillaume of Saillon12061237Landry of Mont12371243Boson II of Granges12431271Henri of Rarogne12711273Rodolphe of Valpelline12731287Pierre of OronFebruary 128715 December 1289vacant12891308Boniface of Challant13081323Aymon of Châtillon13231338Aymon of La Tour13381342Philippe of Chamberlhac13421375Guichard TavelliMurdered by defenestration13751386Édouard of Savoy
Western Schism loyal to Avignon FromToBishopNotes13861386Guillaume of La Baume-Saint-Amourb13871387Robert Chambrier13881392Humbert de Billens13981404Aymon Séchala14041417Jacques (Antoine?) de Challant
loyal to Rome FromToBishopNotes13871388Gerardus (Girard Tavel?)13921393Henri de Blanchis13941402Guillaume IV ("the Good") of Rarogne14021418Guillaume V of Rarognesee Raron affair
Renaissance to early modern
FromToBishopNotes14181437André dei Benzi of Gualdo Archbishop of Kolocza (in Hungary); administrator from 1418, bishop from 1431. Valais witch trials.14371451Guillaume VI of Rarogne14511457Henri Asperlin 14571482Walter Supersaxo Burgundian War14821496Jost of Silenen (d. 1498) Member of Lucerne nobility (uncle of Kaspar von Silenen) and diplomat for the Swiss Confederacy, bishop of Grenoble 1477–1467, Jost ruled as a "Renaissance prince" but after failed campaigns against Milan was forced to abdicate and went into exile in Lyon, retaining only the title of titular bishop of Hierapolis.14961499Nicolas Schiner14991522Mathieu SchinerCardinal; nephew of Nicolas Schiner15221528Philippe am Hengart (not recognised by the Pope) Philippe de Platea (not recognised locally)15291545Adrien I of Riedmatten Valais becomes an eternal associate of the Old Swiss Confederacy in 1529.15481565Jean Jordan 15651604Hildebrand I of Riedmatten Banned protestantism in 160416041613Adrien II of Riedmatten 16131638Hildebrand II Jost In 1628, the Valais becomes a republic, but remains under the nominal rule of the prince-bishops.16381640Barthélemy Supersaxo 16401646Adrien III of Riedmatten 16461672Adrien IV of Riedmatten 16721701Adrien V of Riedmatten 17011734François-Joseph Supersaxo 17341752Jean-Joseph-Arnold Blatter 17521760Jean-Hildebrand Roten 17601780François-Joseph-Frédéric Ambuel 17801790François-Melchior-Joseph Zen-Ruffinen 17901807Joseph Anton Blatter Last prince-bishop, loss of secular power with the French invasion of 1798.
Modern history
FromToBishopNotes18071817Joseph-François-Xavier de Preux 18171829Auguste-Sulpice Zen-Ruffinen 18301843Maurice-Fabien Roten 18431875Pierre-Joseph de Preux 18751901Adrien VI Jardinier 190111 July 1918Jules-Maurice Abbet Born 11 September 1845191919 March 1952Victor Bieler Born 16 March 188119521975François-Nestor Adam Born 7 February 1903; died 8 February 199019751995Henri SchweryBorn 14 June 193219952014Norbert BrunnerBorn 21 June 19422014Jean-Marie LoveyBorn 2 August 1950
References