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Politics & World • Royalty

Prince Louis of Wales

Prince Louis of Wales is a member of the British royal family and the youngest child of William, Prince of Wales, and Catherine, Princess of Wales.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

Prince Louis of Wales is a member of the British royal family and the youngest child of William, Prince of Wales, and Catherine, Princess of Wales. Born in 2018, he is fourth in the line of succession to the British throne. He is the grandson of King Charles III and Diana, Princess of Wales.

Birth and family

Prince Louis was born at St Mary's Hospital in London on 23 April 2018. He is the youngest child of the Prince and Princess of Wales and has two older siblings, Prince George and Princess Charlotte.

Title and style

He was initially styled Prince Louis of Cambridge and later became Prince Louis of Wales after his grandfather Charles III acceded to the throne. His formal style is His Royal Highness Prince Louis of Wales.

Succession

Prince Louis is fourth in the line of succession to the British throne. He follows his father, Prince William, and his two older siblings, Prince George and Princess Charlotte.

Public role

As a young royal, Prince Louis has appeared at selected public family events. His role is largely ceremonial and he does not perform official duties.

Key facts

  • Prince Louis is the youngest child of William, Prince of Wales, and Catherine, Princess of Wales.
  • He was born on 23 April 2018 in London.
  • He is fourth in line to the British throne.
  • His title changed from Prince Louis of Cambridge to Prince Louis of Wales after Charles III became king.
  • He is a grandson of King Charles III and Diana, Princess of Wales.
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Canadian context

Prince Louis is relevant to Canadian readers through Canada’s status as a Commonwealth realm, where the British monarch is also Canada’s monarch.

Frequently asked questions

Who is Prince Louis of Wales?
He is a British royal and the youngest child of William, Prince of Wales, and Catherine, Princess of Wales.
When was Prince Louis born?
He was born on 23 April 2018 in London.
What is Prince Louis’s full name?
His full name is Louis Arthur Charles.
Where does Prince Louis stand in the line of succession?
He is fourth in line to the British throne.
Who are Prince Louis’s siblings?
His older siblings are Prince George and Princess Charlotte.
Why is he called Prince Louis of Wales?
After Charles III became king, Louis’s style changed from Prince Louis of Cambridge to Prince Louis of Wales.

References

  1. The Royal Family — https://www.royal.uk/prince-louis
    Supports: Birth date, birth place, and official title/style.
  2. The Royal Family — https://www.royal.uk/the-prince-of-wales
    Supports: Parentage and confirmation that William and Catherine have three children including Louis.
  3. Wikipedia — https://en.wikipedia.org/wiki/Prince_Louis_of_Wales
    Supports: Full name, family relationships, succession position, and title change.
  4. Encyclopaedia Britannica — https://www.britannica.com/biography/Prince-Louis-of-Wales
    Supports: Biographical identification as a British royal.