| YEAR | DATE | EVENT | HEAD OF STATE |
| 1678 | Count - dinasty Erbach | earl Giorgio Alberto II | |
| 1717 | earl Filippo Carlo | ||
| 1736 | earl John Guglielmo | ||
| 1742 | earl Giorgio Alberto III | ||
| 1778 | earl Ludovico II | ||
| 1794 | earl Cristiano Carlo Augusto | ||
| 1803 | earl Alberto Augusto Ludovico | ||
| 1820 | Union to Greatduchy of Hesse |