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Guillaume Sworn In as New Grand Duke of Luxembourg After Henri Abdicates

The constitutional oath before parliament marked a carefully managed generational transfer witnessed by European royalty alongside EU leaders.

Overview

  • Henri signed the abdication act at the Grand Ducal Palace around 10:00, followed by Guillaume’s oath near 11:00, a flag change, a 21‑gun salute and a balcony appearance.
  • Guillaume pledged to respect the Constitution and to remain politically neutral, delivering his oath and remarks in Luxembourgish, French and German with calls for a united Europe.
  • The Dutch and Belgian monarchs attended with heirs Amalia and Elisabeth, while EU chiefs Ursula von der Leyen and Charles Michel joined other royals and dignitaries.
  • Evening events included a gala, with further celebrations scheduled through the “Trounwiessel” weekend featuring a countrywide tour, performances at Champ du Glacis and the new duke’s first address.
  • Prince Charles, 5, became heir to the throne and is described as Europe’s youngest heir, with his brother François second in line; a Te Deum at Notre‑Dame Cathedral on Sunday is to be led by Cardinal Jean‑Claude Hollerich.