A substantive title, in the United Kingdom, is a title of nobility which is owned in its own right, as opposed to titles shared among cadets, borne as a courtesy title by a peer's relatives, or acquired through marriage. [1]
 United Kingdom –  Prince of Wales  (must be conferred by the monarch after merging in the Crown)
 United Kingdom –  Prince of Wales  (must be conferred by the monarch after merging in the Crown) United Kingdom –  Duke of Cornwall  (restricted to the eldest son of the monarch who is also heir apparent)
 United Kingdom –  Duke of Cornwall  (restricted to the eldest son of the monarch who is also heir apparent) United Kingdom –  Duke of Rothesay  (restricted to the eldest son of the monarch who is also heir apparent)
 United Kingdom –  Duke of Rothesay  (restricted to the eldest son of the monarch who is also heir apparent)The Almanach de Gotha treated titles used by dynasties of abolished monarchies: [2] the head of the house bearing a traditional title of the dynasty in lieu of or after the given name.
 United Kingdom:
 United Kingdom:  In accordance with a tradition dating back to the reign of Napoleon I, titles in pretence were treated by the Almanach de Gotha as if still borne by members of reigning dynasties. [2]
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