Meghan Markle and the Historical Origins of the Duke and Duchess of Sussex Titles

The first Duke of Sussex married twice. Neither wife became Duchess of Sussex. That unusual fact sits at the center of a title now closely associated with Meghan Markle. Long before Queen Elizabeth II revived the dukedom for Prince Harry in 2018, it belonged to Prince Augustus Frederick, a son of King George III whose marriages created a lasting legal problem.

His marriages lacked the approval required under royal law. His children could not inherit his peerages. When he died in 1843, the title disappeared with him.

Meghan entered a different legal position 175 years later. Her marriage to Harry gave her the title Duchess of Sussex immediately. Their later decision to leave royal duties changed how they used their royal styles, but it did not erase the peerage.

The First Duke of Sussex Was an Unusual Royal Son

Prince Augustus Frederick was born on January 27, 1773, the ninth child and sixth son of King George III and Queen Charlotte. Poor health, including asthma, kept him from following the military path taken by several royal princes.

He studied at the University of Göttingen and developed interests beyond court life. He supported parliamentary reform and greater civil rights for Catholics and Jewish people. He became president of the Royal Society in 1830 and assembled a library of about 50,000 books and manuscripts.

King George III created him Duke of Sussex on November 27, 1801. The same letters patent also made him Earl of Inverness and Baron Arklow, linking him symbolically with England, Scotland, and Ireland.

The title did not make him a governor of Sussex or give him ownership of the county. It established his rank and public identity within the peerage.

Why His First Wife Never Became Duchess of Sussex

Augustus Frederick met Lady Augusta Murray while traveling in Italy. They held a marriage ceremony in Rome on April 4, 1793, followed by another in London that December.

The couple had not received King George III’s consent.

Under the Royal Marriages Act 1772, certain descendants of King George II needed the sovereign’s approval before marrying. A court declared the marriage invalid in 1794.

Augustus Frederick and Lady Augusta had two children, Augustus Frederick d’Este and Augusta Emma d’Este. Legally, however, Lady Augusta was not recognized as the prince’s wife.

When George III made Augustus Frederick Duke of Sussex in 1801, she did not become Duchess of Sussex. Their son could not inherit the title. After the duke’s death, Augustus d’Este sought recognition as his father’s legitimate heir, but the House of Lords rejected his claim in 1844.

A Second Marriage Created the Same Problem

Augustus Frederick married Cecilia Underwood on May 2, 1831. Again, he did not obtain the consent required under the 1772 law.

Cecilia could not officially use the title Duchess of Sussex. Queen Victoria later gave her a separate title, Duchess of Inverness, in her own right in 1840.

The first Duke of Sussex therefore had two wives in private life, but no legally recognized Duchess of Sussex.

He died on April 21, 1843. Because he had no legally legitimate son able to inherit under the grant, the Dukedom of Sussex, Earldom of Inverness, and Barony of Arklow became extinct.

For roughly 175 years, no one held the Sussex dukedom.

Queen Elizabeth II Revived the Title in 2018

The title returned on May 19, 2018, the morning Prince Harry married Meghan Markle.

Queen Elizabeth II announced that Harry would become Duke of Sussex, Earl of Dumbarton, and Baron Kilkeel. The titles connected him with Sussex in England, Dumbarton in Scotland, and Kilkeel in Northern Ireland.

The new grant revived only the Dukedom of Sussex. It did not restore Augustus Frederick’s subsidiary titles.

The formal letters patent passed under the Great Seal on July 16, 2018. The grant allowed the titles to descend to Harry’s lawful male-line heirs.

Meghan became Duchess of Sussex through marriage. She also became Countess of Dumbarton and Baroness Kilkeel. They remain listed today on the official public Sussex profile.

Her position sharply differs from Lady Augusta Murray’s. Lady Augusta’s marriage was legally invalid under the rules of her time. Meghan’s marriage was formally recognized, so she acquired the corresponding titles at once.

Why “Princess Meghan” Is Not Her Formal Title

Harry was born a prince. His princely status and his dukedom are separate.

Meghan’s principal public title became Duchess of Sussex because Harry received a dukedom on their wedding day. The wedding announcement stated that she would become Her Royal Highness The Duchess of Sussex upon marriage.

“Princess Meghan” is not her formal title. The wording suggests that she holds a princely title in her own name, which she does not.

Meghan also did not receive a hereditary peerage of her own. Harry is the substantive holder. She uses the corresponding title as his wife.

The Royal Exit Did Not Cancel the Dukedom

Harry and Meghan announced on January 8, 2020, that they intended to step back from senior royal duties.

Buckingham Palace set out the final arrangement on January 18. The January 2020 public statement clearly said they would no longer use their HRH titles because they were no longer working members of the Royal Family.

That agreement affected the public use of “His Royal Highness” and “Her Royal Highness.” It did not remove Harry’s peerage or Meghan’s marital title.

A working royal performs official duties for the sovereign. A duke holds a peerage created by letters patent. One is a role, while the other is a legal dignity.

That distinction is why Harry and Meghan remained Duke and Duchess of Sussex after their departure took effect in spring 2020.

Could the Sussex Titles Be Removed?

Calls to remove the titles often treat every royal designation as though it works the same way.

A royal style, princely title, peerage, honor, military appointment, and working royal status rest on different legal foundations. Each may require a different process.

A detailed 2026 legal briefing clearly explains those differences. A hereditary peerage cannot ordinarily be canceled through a simple palace announcement.

Parliament could legislate on a peerage, but political demands alone do not remove one. As of July 2026, no law or royal action has ended Harry’s Sussex dukedom.

Prince Archie’s Place in the Title’s Future

Prince Archie of Sussex was born on May 6, 2019. Under the wording of the 2018 grant, he is the expected heir to his father’s Sussex, Dumbarton, and Kilkeel titles.

He does not hold those peerages while Harry is alive. His position means the second creation has an heir, unlike the first, which ended after Augustus Frederick’s disputed marriages left him without a legally qualified successor.

The title’s history therefore turns on marriage law and inheritance twice.

In the first creation, the law prevented either wife from becoming Duchess of Sussex and blocked the duke’s son from succeeding. In the second, a legally recognized marriage made Meghan the first woman formally known as Duchess of Sussex and placed Archie in line to inherit.

Meghan’s title began on her wedding day, but its story started more than two centuries earlier. The name connects a modern couple with a Georgian prince, two unrecognized marriages, a failed inheritance claim, and a dukedom dormant for generations.

Leaving royal work changed Harry and Meghan’s official role. It did not undo the legal history that made them Duke and Duchess of Sussex.