| YEAR | DATE | EVENT | HEAD OF STATE |
| 1685 | Landgraft - dinasty Hesse | landgraft Filippo | |
| 1721 | landgraft Carlo I | ||
| 1770 | landgraft Guglielmo | ||
| 1810 | landgraft Ludovico | ||
| 1816 | landgraft Ernesto Costantino | ||
| 1849 | landgraft Carlo II | ||
| 1868 | landgraft Ernesto | ||
| 1918 | 9 november | Union to German State of Hesse |