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| YEAR | DATE | EVENT | HEAD OF STATE |
| 897 | Count-bishopland | earl bishop Pietro I | |
| 904 | earl bishop Ebone | ||
| 911 | earl bishop Sibicone | ||
| 917 | earl bishop Turigario | ||
| 923 | earl bishop Valto | ||
| 931 | earl bishop Pietro II | ||
| 9xx | earl bishop Pietro III | ||
| 938 | earl bishop Ardemanno | ||
| 942 | earl bishop Idelberto | ||
| 952 | earl bishop x | ||
| 964 | earl bishop Zeno | ||
| 967 | earl bishop Gauslino | ||
| 992 | earl bishop Orso | ||
| 1015 | earl bishop x | ||
| 1031 | earl bishop Aistulfo | ||
| 1034 | earl bishop Brocardo | ||
| 1037 | earl bishop x | ||
| 1046 | earl bishop Arnoldo | ||
| 1047 | earl bishop Bernardo Maltraversi | ||
| 053 | earl bishop Verculfo | ||
| 1064 | earl bishop Olderico | ||
| 1083 | earl bishop Milone | ||
| 1091 | earl bishop Pietro IV Cisorcella | ||
| 1119 | earl bishop Sinibaldo | ||
| 1124 | Free Common | ||
| 1227 | 25 february | Lordship - dinasty Da Romano | sire Ezzelino |
| 1256 | 20 june | Free Common | |
| 1318 | 15 july | Lordship - dinasty Da Carrara | sire Giacomo I |
| 1320 | 5 january | sire Enrico earl of Gorizia | |
| 1323 | sire Enrico Count of Carinzia | ||
| 1328 | 3 september | dinasty Da Carrara | sire Marsilio I (I) |
| 1328 | 10 september | dinasty Della Scala | sire Can Grande |
| 1329 | 22 july | sire Mastino | |
| 1337 | 3 august | dinasty Da Carrara | sire Marsilio I (II) |
| 1338 | 21 march | sire Ubertino | |
| 1345 | 27 march | sire Marsilio II | |
| 1345 | 7 may | sire Jacopo II | |
| 1350 | 22 december | sire Jacopino | |
| 1355 | 18 july | sire Francesco I | |
| 1388 | 29 june | sire Francesco Novello (I) | |
| 1388 | 23 november | Milan Occupation | |
| 1390 | 20 june | Lordship - dinasty Da Carrara | sire Francesco Novello (II) |
| 1405 | 22 november | Union to Republic of Venice |