Original: The title of Archduke (feminine: Archduchess) (German: Erzherzog, feminine form: Erzherzogin) denotes a noble rank above Duke and below King, used only by princes of the Houses of Habsburg and Habsburg-Lorraine.
Simplified: The title of Archduke (feminine: Archduchess) (German: Erzherzog, feminine form: Erzherzogin) is a rank above Duke and under King.