Vigilius (First half 8th century) Tello (759/60 – 765, began second cathedral) Constantius (773/74) Remedius (791/96 – 806) Viktor III (822/23 – 831) Verendar (836–843) Esso (849–868) Ruodhar (Rothar) (died before 888) Diotolf (Theodolf) (888–913) Waldo (920–940, died 949) Hartbert (951–972) Hiltibald (976–988) Ulrich I (1006–1024) Rupertus (Ruopert) (?) Hartmann I (1030–1036, died 1039) Dietmar von Montfort (1040–1061, died 1070) Heinrich I von Montfort (1070–1078) Norbert (1080–1087, died 1088) Ulrich II von Tarasp (1087–1095) Wido (1096–1122, first Prince-Bishop) Konrad I von Biberegg (1123–1142) Konrad II (1142–1150) Adalgott (1151–1160) Egino von Ehrenfels (1160–1168) Ulrich III von Tegerfelden (1170–1179) Bruno (1180) Heinrich II von Arbon (1180, 1192) Arnold I (1199) Reinher della Torre (1194–1209) Arnold II von Matsch (1209–1221) Rudolf I von Güttingen, OSB (1224–1226) Berthold von Helfenstein (1228–1233) Ulrich IV von Kyburg (1233/34–1237) Volkard von Neuburg (1237–1251) Heinrich III von Montfort, OP (1251–1272, until 1268 only Bishop Elect) Konrad III von Belmont (1273–1282, until 1278 only Bishop Elect) Friedrich I von Montfort (1282–1290, until 1287 only Bishop Elect) Berthold II von Heiligenberg (1291–1298 only Bishop Elect) Siegfried von Gelnhausen (1298–1321) Rudolf II von Montfort (1322, 1322–1325 administrator, Bishop of Constance 1322–1334) Johannes I Pfefferhard (1325–1331) Ulrich V (Ribi) von Lenzburg, OESA (1331–1355) Peter I Wurst (Jelito) (1356–1368, also 1368–1371 Bishop of Leitomischl, 1371–1381 Archbishop of Magdeburg, 1381–1387 Bishop of Olomouc) Friedrich II von Erdingen (1368–1376, appointed Bishop, also 1376–1396 Bishop of Brixen) Johannes II (Ministri) von Ehingen (1376–1388, until 1377[?] only Bishop-elect) Hartmann II von Werdenberg-Sargans (1388–1416, until 1412[?] only Bishop-elect) Johannes III. Ambundii (1416–1418, also 1418–1424 Archbishop of Riga) Johannes IV Naso (Naz) (1418–1440) Konrad von Rechberg zu Hohenrechberg (1440–1441 administrator) Heinrich IV Freiherr von Hewen (1441–1456 administrator, also 1436–1462 Bishop of Constance) Antonio de Tosabeciis (1456 appointed Bishop) Leonhard Wismair (1456–1458 only Bishop-elect) Ortlieb von Brandis (1458–1491) Heinrich V von Hewen (1491–1505) Paul Ziegler (1505–1509 administrator) Lucius Iter (1542–1549) Thomas von Planta (1550–1565, possibly poisoned) Beat à Porta (1565–1581) Peter de Raschèr (1581–1601) Johann V Flugi von Aspermont (1601–1627) Joseph Mohr (1627–1635) Johann VI Flugi von Aspermont (1636–1661) Ulrich VI de Mont (1661–1692) Ulrich VII von Federspiel (1692–1728) Joseph Benedikt von Rost (1729–1754) Johann Baptist Anton von Federspiel (1755–1777) Johann Franz Dionys von Rost (1777–1793) Karl Rudolf von Buol-Schauenstein (1794–1833, last Prince-Bishop, also 1824–1833 Bishop of St. Gallen) Johann Georg Bossi (1835–1844, also 1835–1836 Bishop of St. Gallen) Kaspar de Carl ab Hohenbalken (1844–1859) Nikolaus Franz Florentini (1859–1876) Kaspar