Duke of Sussex is a substantive title, one of several royal dukedoms, that has been created twice in the Peerage of the United Kingdom. It takes its name from the historic county of Sussex in England.
History
A title associated with Sussex first appeared with the Kingdom of Sussex, an Anglo-Saxon kingdom that was annexed by the Kingdom of Wessex around 827, that later became part of the Kingdom of England. In charters, Sussex’s monarchs were sometimes referred to as ealdormen, or duces in Latin, which is sometimes translated as “dukes”.
First creation, 1801
The title of Duke of Sussex was first conferred on 24 November 1801 upon Prince Augustus Frederick, the sixth son of King George III. He was made Baron Arklow and Earl of Inverness at the same time, also in the Peerage of the United Kingdom. The title became extinct upon Prince Augustus Frederick’s death in 1843.
Although Prince Augustus Frederick was survived by a son and daughter by Lady Augusta Murray, their marriage (purportedly solemnized at St George’s Hanover Square Church, Westminster, in 1793) had been annulled for lack of royal permission under the Royal Marriages Act 1772, rendering the children illegitimate under English law and unable to inherit titles from their father. Both children by the annulled marriage died childless, rendering the issue of their inheritance moot.
On 2 May 1831, Prince Augustus Frederick married secondly (and again in contravention of the Royal Marriages Act 1772), Lady Cecilia Gore at Great Cumberland Place, London. Not being the Prince’s legitimate wife, Lady Cecilia could not be received at court. On 30 March 1840, she was given the title of Duchess of Inverness in her own right by Queen Victoria.
Second creation, 2018
In 2018, the dukedom of Sussex was recreated and granted to Prince Harry, the grandson of Queen Elizabeth II, to mark the occasion of his wedding to Meghan Markle, who thereby became the first ever Duchess of Sussex. On 19 May 2018, it was announced that Prince Harry would become Duke of Sussex in England, with the subsidiary titles of Earl of Dumbarton in Scotland and Baron Kilkeel in Northern Ireland. In 2019, an heir to the dukedom, Archie Mountbatten-Windsor, was born.
In 1999, before the wedding of Prince Edward, the youngest son of Queen Elizabeth II, some had suggested the dukedoms of Sussex or Cambridge as the most likely titles to be granted to him. Instead, Prince Edward was created Earl of Wessex, and it was announced that he would eventually be created Duke of Edinburgh, a title then held by his father, Prince Philip.
There was again speculation that Prince William might be given the Sussex title on his wedding to Catherine Middleton in April 2011, but he was instead created Duke of Cambridge.
Dukes of Sussex
1801 creation
| Duke | Portrait | Birth | Marriages | Death |
|---|---|---|---|---|
| Prince Augustus Frederick House of Hanover 1801–1843 also: Earl of Inverness and Baron Arklow (1801) |
 |
27 January 1773 Buckingham House, London son of King George III and Queen Charlotte |
4 April 1793 Lady Augusta Murray 2 children2 May 1831 Lady Cecilia Underwood No children |
21 April 1843 Kensington Palace, London aged 70 |
| Prince Augustus’ marriage to Lady Augusta Murray, which produced two children, was invalid under the Royal Marriages Act 1772 (he had not asked his father’s approval to marry); so, accordingly, all his titles became extinct on his death. | ||||
2018 creation
| Duke | Portrait | Birth | Marriages | Death |
|---|---|---|---|---|
| Prince Harry House of Windsor 2018–present also: Earl of Dumbarton and Baron Kilkeel (2018) |
 |
15 September 1984 St Mary’s Hospital, London son of Charles, Prince of Wales, and Diana, Princess of Wales |
19 May 2018 Meghan Markle 1 child |
– now 36 years, 221 days old |