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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1308 | 4 january | Lordship - dinasty Da Polenta | sire Bernardino I |
| 1314 | sire Bannini | ||
| 1326 | sire Ostasio I sire of Ravenna | ||
| 1346 | sire Pandolfo sire of Ravenna | ||
| 1347 | sire Bernardino II sire of Ravenna | ||
| 1359 | sire Guido III sire of Ravenna | ||
| 1383 | dinasty Malatesta | sire Galeotto Malatesta sire of Rimini | |
| 1385 | 21 janaury | sire Carlo I | |
| 1429 | Church Territory | ||
| 1465 | Venice Occupation | ||
| 1509 | may | Union to Church State |