The Duke of Sussex is a peerage title conferred upon Prince Augustus Frederick (1773-1843), sixth son of King George III. He was created Duke of Sussex and Earl of Inverness (in the Peerage of Great Britain), and Baron Arklow (in the Peerage of Ireland) on 25 November 1801. Since he died without legitimate issue, the title became extinct.
The title Duke of York is a title of nobility usually given to the second son of the British monarch, unless the title is already held by an earlier monarch's son who is still alive.
The current Duke of York is HRH The Prince Andrew, second son of Her Majesty Queen Elizabeth II.
The title was first held by Duke Ernest Augustus of Brunswick-Lüneburg, Bishop of Osnabrück, the youngest brother of King George I.
Sussex is a southern English county, administratively divided into the counties of West Sussex and East Sussex.
The county is not wholly on the southward slope, for in the middle northern district it contributes a small drainage area to the Thames basin, and the river Medway rises in it.
In the 18th century the duke of Newcastle was all-powerful in the county, where the Pelham family had been settled from the time of Edward I of England; the earl of Chichester being the present representative of the family.