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Guillaume at 40: Relationship with Stéphanie

He was the last heir of his generation to get married, but Hereditary Grand Duke Guillaume waited until he found the perfect bride.

Guillaume found his soulmate in Belgian Countess Stéphanie de Lannoy – someone he’d known for years after being introduced by friends in Germany in 2004. They began dating in 2009 when they reunited at a party. She has called Guillaume her “very own Prince Charming.”

The Grand Ducal Court announced the Hereditary Grand Duke’s engagement to the Belgian Countess in April 2012, and around 40 media groups from Luxembourg and abroad travelled to Chateau de Berg for photos with the family and interviews.

The pair wed in a civil ceremony on 19 October 2012 by Luxembourg City Mayor Xavier Bettel. A formal white-tie gala dinner was held at the Grand Ducal Palace that evening. That same day, Stéphanie was granted Luxembourgish citizenship.

By Denis Probst – Own work, archive Denis Probst, CC BY-SA 3.0 lu,

The following day their religious ceremony was held at Notre Dame Cathedral, with royals from across the globe attending.

From then on, the couple got to work representing Luxembourg at home and abroad, but many kept an eye on Stéphanie’s stomach. People were so happy for the couple, and they were excited for them to have their first child.

Prince Charles blows out his candles

The announcement of Stéphanie’s pregnancy did not come until the end of 2019. The couple welcomed their first child, a son named Prince Charles, on 10 May 2020. He has since begun accompanying them on engagements throughout Luxembourg, much to the delight of the Luxembourgish people.

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About author

Brittani is from Tennessee, USA. She is a political scientist and historian after graduating with a degree in the topics from the University of Tennessee, Knoxville, in December 2014. She also holds a master's degree from Northeastern University. She enjoys reading and researching all things regarding the royals of the world. She's been researching, reading, and writing on royalty for over a decade. She became Europe Editor in October 2016, and then Deputy Editor in January 2019, and has been featured on several podcasts, radio shows, news broadcasts and websites including Global News Canada, ABC News Australia, WION India and BBC World News.