Why does Belgium now have an extra prince in its royal family tree?

Prince Laurent of Belgium legally recognised Clément Vandenkerckhove as his son at a municipal registry office in February 2026, a step that established their relationship in civil law and automatically entitled the 26-year-old to use the title Prince of Belgium. The change became public on 19 August, when Le Soir Magazine reported the completed recognition and Dutch-language newspapers examined what it means for the Belgian royal family tree.

The legal act followed Prince Laurent’s public statement of 9 September 2025 that he was Clément’s biological father. Clément, born in 2000, is the son of Flemish singer and media personality Iris Vandenkerckhove, better known as Wendy Van Wanten. Laurent made the acknowledgement before his son appeared in a VTM documentary about his family history. VRT NWS reported at the time that rumours about the relationship had circulated for more than two decades.

The distinction between that public acknowledgement and the later civil-status procedure is important. A press statement can confirm a personal relationship, but legal filiation—the formally registered parent-child link—determines rights involving a name, inheritance and, in this unusual case, a royal title. According to the latest reporting, Laurent and Clément both signed the recognition document before a civil registrar. The municipality and precise date in February have not been publicly confirmed.

Clément’s title follows from Article 2 of the royal decree of 12 November 2015

Het Nieuwsblad initially reported that King Philippe and the federal government would still have to sign a new royal decree, but it subsequently corrected the article: no individual act of conferral is required. Frederik Swennen, professor of family law at the University of Antwerp, told the newspaper that the appropriate formal style is His Royal Highness Clément Vandenkerckhove, Prince of Belgium. Whether Clément regularly uses that title remains his choice.

That makes the development legally significant but institutionally limited. A prince’s title does not make its holder a working representative of the monarchy. The Royal Household’s public-facing core remains centred on King Philippe, Queen Mathilde and their children, led by Princess Elisabeth, Duchess of Brabant and heir to the throne. Clément has not been assigned engagements, staff or a constitutional function, and the Palace has not announced that he will join official royal activities.

Nor does the title provide a public allowance. Belgium’s 2013 federal framework restricted royal dotations principally to the sovereign, the heir, an abdicated sovereign and certain surviving spouses, while preserving transitional arrangements for Princess Astrid and Prince Laurent. Clément therefore acquires no automatic claim on the federal budget. That remains true during the current 2024-2029 federal legislative cycle: no parliamentary vote, decision by Prime Minister Bart De Wever’s federal government or new expenditure is required merely because the family relationship has been registered.

The title must also be separated from succession to the throne. Article 85 of the Constitution governs succession, while the 2015 royal decree governs titles. Belgian legal commentary cited by Het Nieuwsblad interprets the Constitution’s reference to the ‘natural and legitimate’ direct descendants of Leopold I as excluding children born outside marriage. On that reading, Clément does not enter the succession order, just as Princess Delphine did not after her legal recognition as King Albert II’s daughter. No official institution has announced a change to the line of succession.

In private law, however, the recognition has concrete consequences. Since his filiation is established, Clément becomes one of Laurent’s children for inheritance purposes alongside Princess Louise and Princes Nicolas and Aymeric. Professor Swennen explained that Belgian inheritance law reserves part of a parent’s estate collectively for the children. That is a personal legal consequence, not a transfer of state assets or royal funding. Questions about whether Clément will adopt the dynastic family name Van Saksen-Coburg, retain Vandenkerckhove or seek a combined form have not been settled publicly.

The closest precedent is Princess Delphine. After a long paternity case, the Brussels Court of Appeal ruled in 2020 that she could use the surname of her father, former King Albert II, and the titles Princess of Belgium and Royal Highness; her children Joséphine and Oscar also received princely titles. VRT NWS reported that Delphine sought equal treatment with Albert’s other children. Clément’s route was much shorter because Laurent voluntarily acknowledged him and the matter did not require comparable litigation.

Together, the two cases reveal the difference between the Belgian dynasty as a family, the Royal Family as a wider social and legal category, and the Royal Household as the institution supporting the head of state. Public discussion often collapses those categories. The 2015 decree itself sought to contain the indefinite spread of Belgian princely titles through collateral branches while preserving them for specified descendants of Albert II and the reigning or future sovereign.

The matter is federal, not Flemish, Walloon or European. Civil status is administered locally, but royal titles, succession and dotations derive from federal law, royal decrees and the Constitution. The regions and communities have no authority to confer a Belgian royal title, while the European Union has no institutional role.

What happens next will depend chiefly on Clément. He may use the title in correspondence and official documents, explore a change of surname or continue presenting himself publicly as Clément Vandenkerckhove. Further clarity could come from the Royal Household or civil-status records, but no constitutional or budgetary decision is pending. Belgium has gained an extra prince in the legal family tree, not an extra office-holder at the Palace.