Trounwiessel | Congratulatory book and gifts

The Maison du Grand-Duc has opened an online congratulatory book for members of the public who wish to share a message with Their Royal Highnesses Grand Duke Henri and Grand Duke Guillaume on the occasion of the change of reign on 3 October 2025.

Gifts and donations

Those wishing to make a gesture may make a donation, instead of a gift, support projects run by the new ‘Fondation du Grand-Duc Guillaume et de la Grande-Duchesse Stéphanie’ which aims to help the most vulnerable citizens.

Donations can be made to the Foundation's account:

Fondation du Grand-Duc Guillaume et de la Grande-Duchesse Stéphanie
IBAN: LU85 0019 8055 3228 0000 
BIC Code: BCEELULL 
Communication: ‘Trounwiessel’