| YEAR | DATE | EVENT | HEAD OF STATE |
| 1251 | Count - dinasty Nassau | earl Ottone I | |
| 1290 | earl Enrico II | ||
| 1343 | earl Ottone II | ||
| 1351 | earl John I | ||
| 1416 | earl John III | ||
| 1430 | earl Engelberto I | ||
| 1442 | earl John IV | ||
| 1475 | earl Engelberto II | ||
| 1504 | earl Guglielmo I | ||
| 1559 | earl John VI | ||
| 1605 | earl John VII | ||
| 1623 | earl John VIII | ||
| 1638 | earl Guglielmo II | ||
| 1642 | earl Enrico | ||
| 1652 | earl Guglielmo Maurizio | ||
| 1679 | Principality | prince Guglielmo Maurizio | |
| 1691 | prince Francesco | ||
| 1722 | prince Federico Guglielmo | ||
| 1734 | prince Guglielmo Giacinto | ||
| 1743 | Union to Principality of Nassau-Diez |