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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1095 | Free Common | ||
| 1328 | 3 may | Lordship - dinasty de' Gatti | sire Silvestro de' Gatti |
| 1329 | dinasty Vico | sire Faziolo | |
| 1338 | sire John I | ||
| 1354 | Church Territory | ||
| 1375 | Lordship - dinasty Vico | sire Francesco | |
| 1387 | Church Territory | ||
| 1391 | Lordship - dinasty Vico | sire John II Sciarra | |
| 1395 | Church Territory | ||
| 1413 | Lordship - dinasty de' Gatti | sire John | |
| 1438 | sire Princivalle | ||
| 1454 | sire Antoniaccio | ||
| 1461 | Union to Church State |