When Prince Harry and Meghan, the Duke and Duchess of Sussex, welcomed their first child, Archie Harrison, in May 2019, his surname was listed as Mountbatten-Windsor on the birth certificate.

That same surname was later given to his younger sister, Lilibet, who was christened in March 2023 at a private ceremony. Her full name was recorded as Lilibet Diana Mountbatten-Windsor, according to Vogue.

From Mountbatten-Windsor to Sussex

Today, Archie and Lilibet hold royal titles as Prince and Princess, and their surname has changed as well. This shift stems from changes in the line of succession following the death of Queen Elizabeth II.

Although Harry and Meghan stepped back from royal duties in 2020, they retained their Sussex titles. Under royal tradition, surnames for family members often change in line with titles. For example, Prince William and Princess Kate, as the Prince and Princess of Wales, have children known as George Wales, Charlotte Wales, and Louis Wales.

Before his marriage, Harry’s surname was also Wales. But in May 2018, when Queen Elizabeth granted him the title Duke of Sussex, Meghan took on the Sussex surname upon their wedding.