Count Claus-Casimir of Orange-Nassau, Jonkheer van Amsberg

Count Claus-Casimir
Count Claus-Casimir of Oranje-Nassau,
Jonkheer van Amsberg
Full name
Claus-Casimir Bernhard Marius Max
Father Prince Constantijn of the Netherlands
Mother Laurentien Brinkhorst
Born 21 March 2004 (2004-03-21) (age 5)
The Hague, The Netherlands

Dutch Royal Family
Coat of arms of the Netherlands.svg

HM the Queen *

Count Claus-Casimir of Orange-Nassau, Jonkheer van Amsberg (Claus-Casimir Bernhard Marius Max; born 21 March 2004 at Bronovo Hospital in The Hague), is the second child of TRH Prince Constantijn and Princess Laurentien of the Netherlands and their only son.

His birth was overshadowed by the death, only a day before, of his great-grandmother Princess Juliana of the Netherlands. He is the only grandson of Queen Beatrix and her late husband, Prince Claus. He has two sisters: Countess Eloise, born 8 June 2002 and Countess Leonore, born 3 June 2006.

His christening took place in the chapel of Het Loo Palace in Apeldoorn in October 2004. Claus-Casimir's godparents are Willem-Alexander, Prince of Orange, Prince Maurits of Orange-Nassau, van Vollenhoven, Ed P. Spanjaard, and Countess Tatiana Razumovsky.

Count Claus-Casimir is currently sixth in line to the Dutch throne.

Style, titles and names

  • His highborn Count Claus-Casimir Bernhard Marius Max of Orange-Nassau, Jonkheer van Amsberg (since his birth on 21 March 2004)

By Royal Decree of 11 May 2001, nr. 227 is determined that all children of Prince Constantijn of the Netherlands will bear the title of Count (Countess) of Oranje-Nassau and the honorific Jonkheer (Jonkvrouwe) van Amsberg, and have the surname Van Oranje-Nassau van Amsberg. The titles are hereditary in male lineage. As he is her only male grandchild, Claus-Casimir is currently the only one of Queen Beatrix's grandchildren who will be able to pass this title on to his children.

When asked about their choice of name, the new parents said their little boy had been named after his grandfather Claus von Amsberg, who died in 2002, and three Friesian stadtholders who were all called Casimir. "If he develops more as a Claus, then it will be Claus, if he develops more as a Casimir, it will be Casimir," explained his father. He is called 'Clausimir' by his family and the press.

The official origins of his given names are:



Styles of
Count Claus-Casimir of Orange-Nassau van Amsberg
NL - COA.png
Reference style His highborn
Spoken style Sir
Alternative style
Count Claus-Casimir of Orange-Nassau, Jonkheer van Amsberg
Cadet branch of the House of Amsberg
Born: 21 March 2004
Dutch royalty
Preceded by
Countess Eloise
Line of succession to the Dutch Throne
7th position
Succeeded by
Countess Leonore
British royalty
Preceded by
Prince Constantijn of the Netherlands
Line of succession to the British throne Succeeded by
Countess Eloise of Orange-Nassau

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