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| YEAR | DATE | EVENT | HEAD OF STATE | |
| 1162 | Free Common | |||
| 1307 | Lordship - dinasty Oredelaffi | sire Scarpetta | ||
| 1309 | Church Territory | |||
| 1315 | 2 september | Lordship - dinasty Oredelaffi | sire Francesco I | |
| 1331 | august | Church Territory | ||
| 1333 | 11 september | Lordship - dinasty Ordelaffi | sire Francesco II | |
| 1337 | sire and papal vicaire Francesco II | |||
| 1359 | 4 july | Church Territory | ||
| 1376 | 5 january | Lordship - dinasty Ordelaffi | sire Sinibaldo | |
| 1385 | 13 december | sire Pino I and Francesco III | ||
| 1402 | sire Francesco III | |||
| 1405 | sire Antonio I | |||
| 1405 | 8 september | Church Territory | ||
| 1411 | 7 june | Lordship - dinasty Ordelaffi | sire Giorgio | |
| 1422 | 25 january | sire Teobaldo | ||
| 1424 | 6 september | Milan Occupation | ||
| 1426 | Church Territory | |||
| 1433 | 26 december | Lordship - dinasty Ordelaffi | sire Antonio I (I) | |
| 1436 | 11 july | Church Territory | ||
| 1438 | 26 may | Lordship - dinasty Ordelaffi | sire Antonio I (II) | |
| 1448 | 4 august | sire Francesco IV and Pino II | ||
| 1466 | 4 january | sire Pino II | ||
| 1480 | 9 february | sire Sinibaldo II and Antonio II Maria (I) | ||
| 1480 | 4 july | sire Francesco V | ||
| 1480 | 8 august | dinasty Riario | sire Girolamo | |
| 1488 | 30 april | sire Ottaviano | ||
| 1499 | 19 december | dinasty Borgia | sire Cesare | |
| 1503 | 22 october | dinasty Ordelaffi | sire Antonio II Maria (II) | |
| 1504 | 6 february | sire Ludovico | ||
| 1504 | Church Territory | |||
| 1534 | Lordship - dinasty Zampeschi | sire Antonello | ||
| 1551 | sire Brunoro | |||
| 1598 | Union to Church State |