Duke of EdinburghThe Duke of Edinburgh is a British dukedom. There have been four creations since 1726.
First Creation, July 26, 1726 (Great Britain)
Second Creation, November 19, 1764 (Great Britain, Duke of Gloucester and Edinburgh)
Third Creation, May 24, 1866 (United Kingdom)
Fourth Creation, November 20, 1947 (United Kingdom)
Note: Although it was announced at the time of the wedding of Prince Edward that he would eventually receive this title, he will not inherit the title from his father. Like any normal dukedom, the present Dukedom of Edinburgh passes to the heirs-male of the first Duke. That means that when the present Duke dies, the dukedom will be inherited by his eldest son, The Prince of Wales. If The Prince of Wales is not yet king when this occurs, he will be Duke of Edinburgh until he ascends the throne, at which point the title will merge with the crown, like any title borne by the King. Only at that point would the title be available for regrant to the Earl of Wessex.