| YEAR | DATE | EVENT | HEAD OF STATE |
| 1085 | Count - dinasty Bliesgau | earl Folmar I | |
| 1111 | earl Folmar II | ||
| 1142 | earl Ugo | ||
| 1155 | earl Dietrich I | ||
| 1180 | earl Friedrich I | ||
| 1204 | earl Dietrich II | ||
| 1234 | earl Friedrich II | ||
| 1274 | earl Philipp | ||
| 1284 | earl Corrado | ||
| 1340 | earl Arnoldo | ||
| 1398 | earl John | ||
| 1449 | Union to Count of Saar | ||
| 1583 | Landgraft - dinasty Hesse | landgraft Giorgio I landgraft of Darmstadt | |
| 1596 | landgraft Friedrich I | ||
| 1638 | landgraft Guglielmo Cristoforo | ||
| 1669 | landgraft Giorgio Cristiano | ||
| 1677 | landgraft Friedrich II | ||
| 1708 | 24 january | landgraft Friedrich III | |
| 1746 | 8 june | landgraft Friedrich IV | |
| 1751 | 7 february | landgraft Friedrich V | |
| 1820 | 20 january | landgraft Friedrich VI | |
| 1829 | 2 april | landgraft Ludwig | |
| 1839 | 19 january | landgraft Philipp | |
| 1846 | 15 december | landgraft Gustav | |
| 1848 | 8 september | landgraft Ferdinand | |
| 1866 | 24 march | Union to Greatduchy of Hesse-Darmstadt |