Ahead of Hereditary Grand Duke Guillaume's 40th birthday on November 11, the association 'Patrimoine Roses pour le Luxembourg' has named a rose bush after him, that is, 'Prince Guillaume, Hereditary Grand Duke Guillaume of Luxembourg'. Hereditary Grand Duke Guillaume and Hereditary Grand Duchess Stephanie attended the naming ceremony, in which the pink rose bush was baptized with water from the Luxembourgish river Petrusse.