Kate Middleton and Princess Charlotte share one thing with Queen Elizabeth II that Meghan Markle never will.

The Queen, Duchess of Cambridge and Princess Charlotte have something in common that the Duchess of Sussex will never share with them. The three royals are all named Elizabeth.

Although Middleton is more popularly known as “Kate” or “Catherine” she was born Catherine Elizabeth Middleton. Her middle name was the same as the monarch’s name, Express reported.

Meanwhile, the Duke and Duchess of Cambridge’s only daughter’s full name is Charlotte Elizabeth Diana. Just like Princess Charlotte’s mom and great-grandmother, her name also includes “Elizabeth.”

Princess Charlotte’s name could be a nod to her aunt Pippa whose full name is Philippa Charlotte Middleton. It could also be a nod to her grandmother Carole Middleton who also has Elizabeth in her name. However, it is more likely a tribute to the monarch, Queen Elizabeth II.

On the other hand, Markle is born Rachel Meghan Markle. Her name doesn’t include “Elizabeth”, so she couldn’t share this thing with Queen Elizabeth II, Middleton and Princess Charlotte.

The Queen’s full name is Elizabeth Alexandra Mary Windsor. The name “Elizabeth” is a feminine given name derived from a form of the Hebrew name Elisheva which means “My God is an oath.”

Princess Charlotte won’t be addressed as “princess” in her school, however. According to Hanna Fillingham of Hello!, Princess Charlotte will simply be known as Charlotte Cambridge to her teachers and friends. Her older brother Prince George also won’t be called “prince” but simply George Cambridge.

In related news, Prince George and Princess Charlotte are not allowed to have best friends in school. Prince William and Middleton’s children are attending school at Thomas’s Battersea in London and the school discouraged them from having best friends due to a spirit of inclusion at the private school.

“There’s a policy that if your child is having a party, unless every child in the class is invited, you don’t give out the invites in class,” Jane Moore said. “There are signs everywhere saying be kind, that's the ethos of the school. They don’t encourage you to have best friends.”