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| YEAR | DATE | EVENT | HEAD OF STATE |
| 1567 | 31 march | Landgraft - dinasty Hesse | landgraft George I |
| 1596 | landgraft Ludwig V | ||
| 1626 | landgraft George II | ||
| 1661 | landgraft Ludwig VI | ||
| 1678 | landgraft Ludwig VII | ||
| 1678 | 31 august | landgraft Ernst Ludwig VIII | |
| 1739 | 12 september | landgraft Ludwig IX | |
| 1790 | 6 april | landgraft Ludwig X | |
| 1806 | 13 august | Greatduchy | greatduke Ludwig X (I like greatduke) |
| 1830 | 6 april | greatduke Ludwig II | |
| 1848 | 16 june | greatduke Ludwig III | |
| 1877 | 13 june | greatduke Ludwig IV | |
| 1892 | 13 march | greatduke Ernst Ludwig | |
| 1918 | 8 november | Union to German State of Hesse |