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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1311 | Lordship - dinasty Da Correggio | sire and empire vicaire Giberto III sire of Parma | |
| 1325 | 25 july | sire and empire vicaire Simone sire of Parma | |
| 1326 | sire Guido IV sire of Parma | ||
| 1345 | august | sire Giberto IV | |
| 1373 | 17 july | sire Giberto V and Pietro | |
| 1402 | 19 april | dinasty Terzi | sire Giacomo |
| 1415 | 1 july | dinasty Contrari | sire Uguccione |
| 1431 | dinasty Terzi | sire Nicoḷ Guerriero | |
| 1449 | dinasty Sforza | sire Alessandro | |
| 1458 | dinasty Sanseverino | sire Roberto | |
| 1483 | 10 august | sire Gianfrancesco | |
| 1501 | sire Roberto Ambrogio | ||
| 1532 | march | signora Maddalena | |
| 1544 | signora Lavinia | ||
| 1565 | sire Gianfrancesco | ||
| 1570 | 21 may | sire Gian Galeazzo | |
| 1577 | january | sire Girolamo | |
| 1611 | october | Union to Duchy of Parma |