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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1020 | Lordship - dinasty Da Correggio | sire Frogerio | |
| 1029 | sire Gherardo I | ||
| 1076 | sire Alberto | ||
| 1080 | sire Gherardo II | ||
| 1109 | sire Gherardo III | ||
| 1150 | sire Alberto | ||
| 1174 | sire Giberto | ||
| 1197 | sire Gherardo IV | ||
| 1250 | sire Guido | ||
| 1299 | sire Giberto | ||
| 1321 | sire Azzo | ||
| 1367 | sire Giberto | ||
| 1373 | sire Gherardo | ||
| 1430 | sire Manfredo I | ||
| 1452 | Earldom | count Manfredo I | |
| 1474 | count Borso and Giberto | ||
| 1504 | count Giberto | ||
| 1518 | count Manfredo II, Gianfrancesco, Ippolito and Gerolamo | ||
| 1531 | count Manfredo II, Ippolito and Gerolamo | ||
| 1546 | count Gianfrancesco, Ippolito and Gerolamo | ||
| 1552 | count Gerolamo | ||
| 1572 | count Giberto II, Camillo, Fabrizio and Alessandro | ||
| 1580 | count Camillo, Fabrizio and Alessandro | ||
| 1591 | count Camillo and Fabrizio | ||
| 1597 | count Camillo | ||
| 1605 | count Siro | ||
| 1635 | Union to Duchy of Modena and Reggio |