Duke of Nassau
| Germany | English | French | Year | Memo |
| Friedrich August | 1806-1816 | P.of Nassau-Usingen | ||
| Wilhelm | 1816-1839 | P.of Nassau | ||
| Adolf | 1839-1866 | GD.of Luxemburg |
1806 to be from Prince of Nassau-Usingen, 1816 united Prince of Nassau, 1866 to King of Prussia.