| YEAR | DATE | EVENT | HEAD OF STATE |
| 1659 | 10 april | Count - dinasty Nassau | earl Walrad |
| 1688 | 4 august | Principality | prince Walrad |
| 1702 | 17 october | prince Wilhelm Heinrich | |
| 1718 | 14 february | prince Karl earl of Saar | |
| 1775 | 21 june | prince Karl Wilhelm earl of Saar | |
| 1803 | 17 may | prince Friedrich August | |
| 1806 | 31 july | Duchy | duke Friedrich August |
| 1806 | 30 august | Union to Duchy of Nassau |