On February 28, on the occasion of "Rare Disease Day", our beloved son called us into his room to speak to him one last time. Frederik found the strength and courage to say goodbye to each of us in turn: his brother Alexander, his sister Charlotte, me []. He had already said everything he had on his heart to his extraordinary mother, who had not left his side for 15 years," the prince and husband of Princess Julie of Nassau first wrote. "Even in his last moments, his boundless humor and compassion forced him to leave us with a last laugh to cheer us up.
- Robert of Luxembourg