Original: Archduke (Erzherzog) is a title distinct from Grand Duke (Großherzog or Großfürst), used in some other German royal houses and still in sovereign Luxemburg.
Simplified: Archduke (Erzherzog) is a title distinct from Grand Duke (Großherzog or Großfürst) that is used in some other German royal houses and still in sovereign Luxemburg.