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|
| YEAR | DATE | EVENT | HEAD OF STATE |
| 1215 | Lordship - dinasty Torelli | sire Salinguerra | |
| 1216 | Union to Modena | ||
| 1319 | Lordship - dinasty Pio | sire Manfredo I (I) | |
| 1320 | dinasty Bonaccolsi | sire Rinaldo Passerino sire of Mantova | |
| 1327 | dinasty Pio | sire Manfredo I (II) | |
| 1348 | 12 september | sire Galasso I | |
| 1367 | 13 march | sire Giberto I and Marsiglio | |
| 1384 | sire Giberto I | ||
| 1389 | sire Marco I | ||
| 1418 | sire Alberto I and Galasso II | ||
| 1463 | sire Galasso II and Lionello I | ||
| 1465 | sire Lionello I | ||
| 1480 | sire Alberto II | ||
| 1523 | sire Lionello II | ||
| 1525 | 24 february | Union to Duchy of Modena |