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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1165 | Free Common | ||
| 1345 | Lordship - dinasty Ottoni | sire Guido I | |
| 1362 | sire Francesco I | ||
| 1394 | 4 february | sire and papal vicaire Francesco I and Guido II | |
| 1415 | sire and papal vicaire Guido II | ||
| 1433 | dinasty Sforza | sire Francesco | |
| 1443 | dinasty Ottoni | sire and papal vicaire Francesco II | |
| 1462 | sire and papal vicaire Antonio I | ||
| 1481 | sire and papal vicaire Alessandro | ||
| 1485 | sire and papal vicaire Ranuccio I (I) | ||
| 1502 | october | dinasty Borgia | sire Giovanni duca di Nepi |
| 1503 | august | dinasty Ottoni | sire and papal vicaire Ranuccio I (II) |
| 1510 | sire and papal vicaire Giovanni | ||
| 1520 | sire and papal vicaire Ascanio | ||
| 1537 | sire and papal vicaire Cesare I | ||
| 1543 | sire and papal vicaire Antonio II (I) | ||
| 1554 | sire aAntonio III | ||
| 1559 | 27 august | sire and papal vicaire Antonio II (II) | |
| 1564 | sire and papal vicaire Pirro I | ||
| 1578 | Union to Church State |