Grand Duke

From Emperor's Hammer Encyclopaedia Imperia

An Imperial Grand Duke is the pinnacle of the New Order's aristocracy, and this title is only bestowed upon the very highest reaches of the Empire and only when a majority vote of the entire Directorate is carried out, and the recipient is named by a unanimous vote of the Ministry Council in favor of this most worthy bestowment. The title of Grand Duke, once awarded, may never be taken away, and this officer may proudly display the rank until the end of their days. A member who is granted this title may use the title "Grand Duke" or "Grand Duchess" in formal occasions, and are permitted the privilege of representing a specific location within the Emperor's Hammer. Only a Grand Moff - either current or former - may receive this prestigious award.

Grand Moff, Grand Duke John Doe of Aurora
Grand Moff, Grand Duchess Jane Doe of Aurora