The Queen’s full name is Elizabeth Alexandra Mary.

Elizabeth the Second, by the Grace of God of the United Kingdom of Great Britain and Northern Ireland and of Her other Realms and Territories Queen, Head of the Commonwealth, Defender of the Faith is her full formal title.

People may address the Queen as Your Majesty or Your Royal Majesty.

Because Queen Elizabeth was born into the Royal House of Windsor, her surname is Windsor.

As a result of her marriage to Prince Philip in 1947, the Queen and Prince Philip’s offspring can use Mountbatten-Windsor as a surname.

When Princess Anne married in 1973, it was the first time the surname appeared on an official record.

Unless Prince Charles chooses otherwise when he becomes King, the name Mountbatten-Windsor will remain the Royal Family’s personal last name.

Prince William and his wife Kate often use the surname Cambridge for their family, while Prince Harry, before he became Duke of Sussex, frequently used the surname Wales.

When The Queen married Lieutenant Philip Mountbatten in 1947, she did not adopt his surname as is usual.

Surnames are not always required for members of the Royal Family.

“Members of the Royal Family can be known both by the name of the Royal house, and by a surname, which are not always the same. And often they do not use a surname at all,” according to the Royal Family’s website.

Prior to 1917, royals did not have a surname and instead used the name of their father’s “House” for example, Tudor.

The Queen’s grandfather, King George V, not only renamed the House of Saxe-Coburg-Gotha to Windsor, but he also declared that this would be his family’s surname, a royal first.

It was altered in part as a result of post-World War I hatred of Germany.

Following her accession to the throne in 1952, the Queen stated, “That I and my children shall be styled and known as the house and family of Windsor, and that my descendants who marry and their descendants shall bear the name of Windsor.”

However, at the request of the Queen and Prince Philip, the royal couple chose to separate their offspring from the rest of the royal family in 1960.

It has no effect on the royal house’s name, which remains Windsor.