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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1096 | Count - dinasty Wassemburg | earl Gerardo I | |
| 1135 | earl Enrico | ||
| 1182 | earl Ottone I | ||
| 1207 | earl Gerardo II | ||
| 1229 | earl Ottone II | ||
| 1271 | earl Rainaldo I | ||
| 1326 | earl Rainaldo II | ||
| 1339 | Duchy | duke Rainaldo II | |
| 1343 | duke Rainaldo III | ||
| 1361 | duke Edoardo | ||
| 1371 | dukes Matilde | ||
| 1384 | dinasty Heimbach | duke Guglielmo III duke of Julich | |
| 1402 | duke Rainaldo IV duke of Julich | ||
| 1423 | dinasty Egmond | duke Arnoldo | |
| 1473 | duke Adolfo | ||
| 1477 | duke Carlo | ||
| 1538 | Duchy of Paesi Bassi of Nord | ||
| 1579 | 25 january | 4° provence of United Provence | |
| 1585 | statholder Adolfo of Neuhar-Moers | ||
| 1590 | statholder: statholder of Holland | ||
| 1650 | 6 november | statholder John De Witt | |
| 1672 | august | statholder: statholder of Holland | |
| 1702 | 19 march | statholder Antionio Heynsius | |
| 1722 | statholder: statholder of Friesland | ||
| 1751 | 22 october | United to Holland |