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| YEAR | DATE | EVENT | HEAD OF STATE | |
| 954 | Free Common | |||
| 1286 | Lordship - dinasty Pagano | sire Maghinardo | ||
| 1302 | Church Territory | |||
| 1313 | 4 january | Lordship - dinasty Manfredi | sire Francesco | |
| 1327 | 10 july | sire Alberghettino | ||
| 1328 | 23 july | Church Territory | ||
| 1339 | 8 january | Lordship - dinasty Manfredi | sire Rizzardo | |
| 1340 | 23 august | sire Giovanni | ||
| 1356 | 17 november | Church Territory | ||
| 1377 | 25 july | Lordship - dinasty Manfredi | sire Astorgio I | |
| 1404 | 15 september | Church Territory | ||
| 1410 | 28 june | Lordship - dinasty Manfredi | sire Giangaleazzo I | |
| 1417 | 16 october | sire Guidantonio (I) | ||
| 1424 | february | dinasty Visconti | sire Filippo Maria duke of Milano | |
| 1426 | 30 december | dinasty Manfredi | sire Guidantonio (II) | |
| 1448 | 20 june | sire Astorgio II | ||
| 1465 | sire Astorking II | |||
| 1468 | 12 march | sire Carlo | ||
| 1477 | 9 december | sire Galeotto | ||
| 1488 | 31 may | sire Astorgio III | ||
| 1501 | 25 april | dinasty Borgia | sire Cesare | |
| 1503 | 26 october | dinasty Manfredi | sire Francesco Astorgio | |
| 1503 | 19 november | Venice Occupation | ||
| 1509 | may | Union to Church State |