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| YEAR | DATE | EVENT | HEAD OF STATE | |
| 568 | Longobard Duchy of Trento | |||
| 774 | Marquisate of Trento | |||
| 1027 | Bishopland-Principality | bishop Ulrich II | ||
| 1055 | bishop Azzo | |||
| 1065 | bishop Henry I | |||
| 1082 | bishop Adalberon | |||
| 1106 | bishop Gebhard I | |||
| 1120 | bishop Albert I | |||
| 1124 | bishop Altmann | |||
| 1149 | bishop Arnold II | |||
| 1154 | bishop Eberhard | |||
| 1156 | bishop Albert II | |||
| 1177 | bishop Salomon | |||
| 1183 | bishop Albert III of Madruzzo | |||
| 1188 | bishop Corrado II Biseno | |||
| 1205 | bishop Friedrich von Wangen | |||
| 1218 | bishop Albrecht IV of Ravenstein | |||
| 1223 | bishop Gerardo I Oscasali | |||
| 1232 | bishop Aldrighetto of Castelcampo | |||
| 1247 | bishop Egino of Eppan | |||
| 1273 | bishop Enrico II | |||
| 1289 | bishop Filippo Buonacolsi | |||
| 1303 | bishop Bartolomeo Quirini | |||
| 1307 | bishop Enrico III | |||
| 1336 | bishop Nicola Abrein | |||
| 1347 | bishop Gerardo II of Magnocco | |||
| 1348 | bishop John III of Pistoia | |||
| 1349 | bishop Meinardo of Neuhaus | |||
| 1362 | bishop Alberto V of Ortenburgo | |||
| 1390 | bishop Giorgio I of Liechtenstein | |||
| 1419 | bishop Ermanno of Cilly | |||
| 1422 | bishop Enrico IV flechtel | |||
| 1423 | bishop Alessandro of Masovia | |||
| 1444 | bishop Benedetto I | |||
| 1446 | bishop Giorgio II Hak | |||
| 1465 | bishop John IV Hinderbach | |||
| 1486 | bishop Udalrico III of Frundesberg | |||
| 1493 | bishop Udalrico IV of Liechtenstein | |||
| 1505 | bishop Giorgio III of Neideck | |||
| 1514 | bishop Bernardo III of Gloss | |||
| 1539 | 5 august | bishop Cristoforo of Madruzzo | ||
| 1567 | bishop Ludovico of Madruzzo | |||
| 1600 | 20 april | bishop Carlo Gaudenzio of Madruzzo | ||
| 1629 | 4 january | bishop Carlo Emanuele | ||
| 1658 | 15 december | bishop Sigismondo Francesco of Austria | ||
| 1665 | bishop Alberto of Arrach | |||
| 1667 | bishop Sigismondo Alfonso of Thun | |||
| 1677 | bishop Francesco Alberti of Pola | |||
| 1689 | bishop Giuseppe Vittorio Alberti of Enno | |||
| 1696 | 7 march | bishop Johann Michael Graf von Spaur | ||
| 1725 | 9 september | bishop Johann Benedict Gentilotti | ||
| 1725 | 26 november | bishop Anton Dominicus Graf von Wolckenstein | ||
| 1730 | 19 june | bishop Dominik Anton Graf von Thun | ||
| 1758 | 7 september | bishop Franz Felix Graf Alberti von Enno | ||
| 1763 | 2 july | bishop Christoph Franz Sizzo von Norris, Marquis von Castellara | ||
| 1776 | 29 may | bishop Peter Vigil Graf von Thun und Hohenstein | ||
| 1800 | 2 april | bishop Emmanuel Maria Peter Graf von Thun und Hohenstein | ||
| 1802 | Union to Count of Tirolo | |||
| 1805 | Union to Kingdom of Bavaria | |||
| 1810 | Union to Kingdom of Italy | |||
| 1814 | Union to Count of Tyrol | |||
| 1918 | 3 november | Union to Kingdom of Italy |