| YEAR | DATE | EVENT | DUKE |
| 1627 | Duchy - dinasty Oldenburg | Augusto I | |
| 1645 | Augusto II | ||
| 1689 | Federico Guglielmo I | ||
| 1719 | Federico Ludovico | ||
| 1728 | Federico Guglielmo II | ||
| 1749 | Federico I | ||
| 1757 | Carlo Ludovico | ||
| 1774 | Pietro Augusto | ||
| 1775 | Federico II duke of Glucksburg | ||
| 1815 | Guglielmo duke of Glucksburg | ||
| 1825 | Union to ducato of Glucksburg |