7 Shocking Facts About Princess Leonor That Will Change How You See Her

Everyone thinks they know Princess Leonor. The elegant young heir. The future Queen of Spain. The girl who always looks composed at royal ceremonies.

But every time you think you have figured her out, another chapter of her life opens up and leaves you genuinely speechless. Here are seven more facts that most people — even royal fans — simply do not know about her.

1. She Swore an Oath to Defend Spain “Even at the Cost of Her Own Life” — at Age 18

On her 18th birthday, October 31, 2023, Princess Leonor stood before the full Spanish Parliament — the Congress of Deputies and the Senate — and swore an oath to the Constitution. But the oath was not purely ceremonial. During her military training just weeks earlier, she had already sworn an oath of allegiance to the Spanish flag at the General Military Academy in Zaragoza, before her parents and the entire cadet corps. That oath, in the Spanish military tradition, includes a pledge to defend Spain with your life if necessary. She was 18 years old. She said the words clearly, without hesitation, in front of cameras watched by the entire country.

At the parliamentary ceremony she said publicly: “There is no greater pride. On this important day — which I will always remember with emotion — I ask you to trust me, as I have placed all my trust in our future, in the future of Spain.” The Spanish Parliament also awarded her the Gold Medals of both the Congress and the Senate that same day. The Royal Mint struck a commemorative gold and silver coin to mark the occasion.

2. She Personally Met Pope Leo XIV in June 2026 — One of Her First Major Diplomatic Moments

On June 6, 2026, Princess Leonor and her younger sister Infanta Sofía attended their first-ever meeting with Pope Leo XIV during his historic visit to Spain. The following day, both sisters attended a public mass celebrated by the Pope in Madrid’s Plaza de Cibeles. For Leonor specifically, this was not just a family occasion — it was an early but significant diplomatic moment. As future head of state of a constitutionally Catholic country, her relationship with the Vatican carries real institutional weight. She handled it with the same composure she brings to every public moment — and the images from the meeting circulated across European media for days.

3. She Was the First Person Ever Named “Adopted Daughter of Marín” — Following Her Father’s Footsteps by 39 Years

When Princess Leonor completed her naval training at the Naval Academy of Marín in Galicia in July 2025, the town made history. She became the very first person ever to receive the title of “Adopted Daughter of Marín.” Her father King Felipe VI had been named “Adopted Son of Marín” back in 1986 when he trained at the same academy. Thirty-nine years later, his daughter walked out of the same gates and the town created a brand new title just for her — because there had simply never been a woman to honour before. Leonor reflected on her year in the Navy with quiet dignity, saying the experience had “strengthened the values of honour, valour, discipline, and loyalty” that define the Naval Military Academy.

4. She Delivered Her First Public Speech at Age 13 — on Her Own Birthday — About the Spanish Constitution

On October 31, 2018 — her 13th birthday — Princess Leonor stood at the Instituto Cervantes in Madrid and read the first article of Spain’s Constitution aloud to a national audience. The event marked the 40th anniversary of the Constitution and her father King Felipe watched from the front row. The detail that most people miss is that her father had done the exact same thing at the exact same age — 13 — when he gave his first public address. It was a deliberate, symbolic parallel. At 13, Leonor was already stepping into a role with 400 years of institutional history behind it, reading words written before she was born, to a country she will one day lead. She did not stumble. She did not rush. She read it exactly as it was meant to be read.

5. She Attended the Same Daycare as the Children of the King’s Bodyguards

Before any of the international schools, the military academies, or the medieval castle in Wales — Princess Leonor’s first school was the Escuela Infantil Guardia Real. This is the daycare specifically attached to the Spanish Royal Guard, the regiment responsible for physically protecting the King of Spain. She attended it alongside the children of the soldiers and officers who guard her family. It was a deliberate choice by King Felipe and Queen Letizia to ground their daughter in something real from the very beginning. Not a private elite nursery for aristocrats — the nursery for the children of her family’s own protectors. That choice says something about the kind of parents they are, and arguably about the kind of queen they are raising.

6. Her Mother Queen Letizia Was a Working Television Journalist — Not a Royal — When They Met

This one shocks people more than it should. Princess Leonor’s mother was not born into royalty. Queen Letizia Ortiz was a professional broadcast journalist working for CNN+ and later as a news anchor for the Spanish national channel TVE when she met Prince Felipe. They announced their engagement in 2003 and married in 2004. Letizia came from a middle-class family in Oviedo. Her father was a journalist. She had been previously married and divorced. She had no royal blood, no aristocratic title, and no preparation for palace life. She walked into it entirely from the outside. And she studied journalism at Complutense University in Madrid — which is one of the reasons Leonor’s own university choice was watched so closely. The daughter of a former TV journalist will study Political Science. The contrast is everything.

7. She Kept Her Mother’s Surname Alongside Her Father’s Throughout Military Training — By Personal Choice

In Spanish tradition, a person carries both their father’s and mother’s surnames. Princess Leonor’s full surname is Borbón Ortiz — “Borbón” from her father the King, and “Ortiz” from her mother the former journalist. Throughout her three years of military training, she chose to use both surnames on her uniform and in official military records. She did not simplify it. She did not drop her mother’s name to appear more dynastically traditional. Leonor de Borbón Ortiz is how she signed in. It is a small thing, but in the world of royal protocol, small things are rarely accidental.