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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1014 | Free Common | ||
| 1173 | Lordship - dinasty Da Romano | sire Ezzelino I | |
| 1183 | dinasty Da Camino | sire Jacopino | |
| 1191 | dinasty Da Romano | sire Ezzelino II | |
| 1192 | Free Common | ||
| 1237 | Lordship - dinasty Da Romano | sire Ezzelino III and Alberico | |
| 1259 | 16 september | Free Common | |
| 1283 | 15 november | Lordship - dinasty Da Camino | sire Gherardo |
| 1307 | 26 march | sire Rizzardo | |
| 1312 | dinasty Asburgo | sire Federico III H.R.E. | |
| 1328 | Lordship - dinasty Tempesta | sire Guecello | |
| 1329 | 22 july | dinasty Della Scala | sire Bartolomeo |
| 1333 | sire Giovanni | ||
| 1339 | 24 january | Union to Republic of Venice | |
| 1381 | may | Lordship - dinasty Asburgo | sire Leopoldo III Duchy of Austria |
| 1384 | january | dinasty Da Carrara | sire Francesco |
| 1388 | december | dinasty Visconti | sire Gian Galeazzo |
| 1389 | 24 january | Union to Republic of Venice |