Grand duchy
A grand duchy, sometimes referred to as a grand dukedom, is a territory whose head of state is a monarch, either a grand duke or grand duchess.Today Luxembourg is the only remaining grand duchy. Howe...
Grand duchy - Wikipedia
Grand prince
The title grand prince or great prince (Latin: Magnus Princeps) ranked in honour below emperor and tsar and above a sovereign prince (or Fürst). Grand duke is the usual and established, though not...