Prince Louis of Luxembourg turned 40 this week with considerably less international attention than a comparable milestone in Britain would attract. Yet his family story contains almost every ingredient associated with larger royal houses: a young romance considered unsuitable by the court, a renunciation of succession rights, two sons born outside the eventual line to the throne, a high-profile divorce, a later engagement that collapsed and, eventually, a surprisingly harmonious co-parenting arrangement.
Louis, born on 3 August 1986, is the third son of former Grand Duke Henri and Grand Duchess Maria Teresa. He met Tessy Antony in 2004 whilst both were serving in a NATO peacekeeping mission in the former Yugoslavia. Gabriel was born on 12 March 2006, before their marriage on 29 September that year; Noah followed on 21 September 2007.
The unusual part is what happened to the succession. When Louis married Tessy, he formally renounced his own place in the line to the throne and that of his descendants. Grand Duke Henri and Grand Duchess Maria Teresa granted Tessy the title of Princess of Luxembourg and elevated Gabriel and Noah to Princes of Nassau on National Day in 2009, a gesture read widely as reconciliation. Both boys were later styled as Prince of Luxembourg. The gesture surrounded them with royal prestige whilst leaving the succession question exactly as Louis had settled it years earlier.
Princes Without a Claim
Gabriel, now 20, and Noah, 18, are grandchildren of a former sovereign, nephews of the current Grand Duke Guillaume V, and visible members of the family at major ceremonies.
Neither stands in line to become grand duke. In a recent interview with the Royal News Organisation, Noah addressed the misconceptions that come with his title, explaining that people “assume everything is handed” to him but that he has to “work” for what he wants. Their father, meanwhile, lives in Paris and works as a mediator at his company SIBE Mediation, undertaking royal engagements in Luxembourg when time allows. Luxembourg itself modernised its succession rules in 2010 when Henri introduced absolute primogeniture, ending male preference for later generations. The irony is unmistakable: the monarchy became more egalitarian after Louis and his sons had already stepped outside it.
The current succession runs through Guillaume V and his sons before moving to other eligible branches of the family. Gabriel and Noah therefore occupy an unusual constitutional position: formally royal, ceremonially present and dynastically peripheral. They are princes whom the succession passed by before they were old enough to understand why, as a consequence of a decision their father made at the age of nineteen.
The Scandal Became Surprisingly Civil
What once looked like a traditional royal controversy has aged into something less dramatic.
Louis and Tessy divorced on 4 April 2019. When Louis became engaged to French lawyer Scarlett-Lauren Sirgue in 2021, Tessy publicly congratulated them. That engagement ended the following year, whilst Tessy had already remarried Swiss businessman Frank Floessel. To mark Louis’s 40th birthday this week, Tessy shared photographs of Gabriel and Noah on her social media accounts with the caption: “Happy birthday, dad.” The succession rules remain formal, but the personal relationships behind them are considerably less rigid than the decisions that originally produced the drama.
Britain’s monarchy generates global headlines from comparatively small family disagreements. Luxembourg manages to produce genuine constitutional curiosities with barely a ripple outside royal-watching circles. The Nassau family’s relative obscurity gives it an advantage: Gabriel and Noah can remain princes without carrying the expectations attached to heirs, and Louis can celebrate 40 as a royal whose most consequential dynastic decision happened when he was barely out of his teens. For a family supposedly defined by hierarchy, the result is remarkably unconventional.
Luxembourg’s Quiet Advantage
Luxembourg has fewer than 700,000 inhabitants and its monarchy carries neither Britain’s imperial history nor its global media machinery.
Yet scale is only part of the explanation for the family’s ability to move through genuine institutional drama with relatively little external scrutiny. Henri abdicated on 3 October 2025, making Guillaume V the new Grand Duke in a transition that passed without the sustained international commentary a comparable change in a larger monarchy would have generated.
The Luxembourg story is therefore more than local royal colour. It shows how succession rules, once set in motion, can shape lives for generations, and how the personal cost of dynastic decisions often falls on children rather than the adults who made them. Gabriel and Noah are princes.
They are also the living consequences of a choice that predated their ability to influence it, navigating between institutional prestige and the freedom of a private life the succession no longer requires of them.
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