[2] His birth was overshadowed by the death, only a day before, of his great-grandmother Queen Juliana.

His baptism took place in the chapel of Het Loo Palace in Apeldoorn on 10 October 2004.

[4] Claus-Casimir's godparents are King Willem-Alexander, Prince Maurits of Orange-Nassau, van Vollenhoven, Ed P. Spanjaard, and Countess Tatiana Razumovsky von Wigstein.

After studying at Vrijzinnig Christelijk Lyceum (VCL) in The Hague, Claus-Casimir moved to Scotland to attend Gordonstoun School where he graduated in June 2022.

Upon the abdication of Queen Beatrix on 30 April 2013, the children of Prince Constantijn and Princess Laurentien ceased to be members of the Royal House, although they continue to be members of the royal family.