Royal Profile: 37 Facts About Prince Constantijn of the Netherlands

1. Prince Constantijn Christof Frederik Aschwin of The Netherlands was born 11 October 1969 
2. He was third and youngest son of then Queen Beatrix and the late Prince Claus of the Netherlands {Source}.
3. Prince Constantijn has two brothers{Source}:
1. King Willem-Alexander of The Netherlands (1967)
2. Prince Friso van Oranje-Nassau (1968-2013)
4. Through his brothers, he has two sisters-in-law:
1. Queen Maxima of The Netherlands (1971, m. 2001)
2. Princess Mabel van Oranje-Nassau (1968, m. 2004-2013, his death)
5. The youngest son of Princess Beatrix has  five nieces{Source}:
1. Princess Catharina-Amalia of Oranje (2003)
2. Princess Alexia of The Netherlands (2005)
3. Countess Luana van Oranje-Nassau (2005)
4. Princess Ariane of The Netherlands (2007)
5. Countess Zaria van Oranje-Nassau (2007)
6. His godparents were {Source}:
1. King Constantine II of Greece
2. Prince Aschwin zu Lippe-Biesterfeld
3. Axel Freiherr von dem Bussche-Streithorst
4. Max Kohnstamm
5. Mrs. Corinne de Beaufort-Sickinghe
7. Presently, he is 4th in line for the Dutch throne after three of his nieces. 
8. If something should happen to his brother and sister-in-law before Princess Catharina-Amalia van Oranje becomes of legal age, he will act as regent for her {Source}.
9. He was educated in The Netherlands, France and Italy {Source}.
10. Princess Beatirx's youngest child received his primary education at the Nieuwe Baarnse School {Source}. 
11. His secondary education at the Eerste Vrijzinnig Christelijk Lyceum in The Hague, where he gained his VWO (pre-university education) certificate in 1987{Source}
12. During the 1987-88 academic year, Prince Constantijn attended language courses in France and Italy{Source}.
13.  He studied law at Leiden University, and became a lawyer {Source}.
14. He worked in Belgium, for the department of Dutch European Union Commissioner of Foreign Relations {Source}. 
15. After that, he was hired by the EU where he worked in various capacities until December 1999 {Source}. 
16. In December 2000, he obtained a MBA from INSEAD in France {Source}.
17.  He spent that summer working for International Finance Corporation of the World Bank group in Washington, D.C. {Source}. 
18. He worked until late 2002 for strategic consultants Booz Allen Hamilton in London {Source}.
19. Since 2003 he has worked for the RAND Corporation Europe in Brussels {Source}.
20. Furthermore, he has a part-time position at the Netherlands Ministry of Foreign Affairs {Source}.
21. Unlike his older brother, he rarely makes appearances on The Netherlands behalf {Source}.
22. 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.
23. He is an avid sportsman, who enjoys Football, tennis, golf and skiing. He also dabbles a bit in the arts, enjoying drawing, cooking and reading {Source}.
24. He married Laurentien Brinkhorst civilly on 17 May 2001 {Source}. 
25. They were religiously married on 19 May 2001 {Source}. 
26. Together they have three children, two daughters and a son {Source}:
1. Countess Eloise van Oranje-Nassau (2002)
2. Count Claus-Casimir van Oranje-Nassau (2004)
3. Countess Leonore van Oranje-Nassau (2006)
27. He holds orders from The Netherlands, Belgium and Luxembourg.
28. He is godfather to:
1. Princess Catharina-Amalia van Oranje (2003) (his niece)
2. Countess Luana van Oranje-Nassau (2005) (niece)
3. Miss Alaïa-Maria Irene Cécile Brenninkmeijer (2014) (his cousin's daughter)
29. He is chair or honorary chair of several organizations including
1. The Hauge Process on Refugees and Migration{Source}
2. The Prince Berhard Nature Fund {Source}.
3. The Prince Claus Fund{Source} (Honorary)
30. He is also a:
1. Member of the supervisory board of the Stedelijk Museum, Amsterdam {Source}
2. Patron of the World Press Photo Foundation{Source}.
3. Patron of the National Musical Instrument Fund{Source}.
4. Patron of the Oskar Back Study Foundation for young violinists{Source}.
31. Through his mother, he is a nephew of :
1. Princess Irene of The Netherlands (1939)
2. Princess Margriet Francisca of The Netherlands (1943)
3. Princess M. Christina of The Netherlands (1947-2019)
32. On his maternal side, he is a first cousin of:
1. Prince Maurits van Oranje-Nassau (1968)
2. Prince Bernhard van Oranje-Nassau (1969)
3. Prince Carlo of Bourbon Parma, The Duke of Parma, The Duke of Madrid, The Duke of Piacenza (1970)
4. Prince Jaime of Bourbon-Parma, The Count of Bardi (1972)
5. Princess Margarita of Bourbon-Parma, The Countess of Colorno (1972)
6. Prince Pieter-Christiaan van Oranje-Nassau (1972)
7. Princess Maria Carolina of Bourbon-Parma, Marchioness of Sala (1974)
8. Prince Floris Frederik Martijn of Orange-Nassau, van Vollenhoven (1975)
9. Bernardo Federico Tomás Guillermo (1977)
10. Nicolás Daniel Mauricio Guillermo (1979)
11. Juliana Edenia Antonia Guillermo (1981)
33. His maternal 1st cousins-in-law are:
1. Princess Marilène van Oranje-Nassau (1970, m. 1998)
2. Princess Annette van Oranje-Nassau (1972, m. 2000)
3. Princess Annemarie of Bourbon-Parma (m. 2010)
4. Princess Viktória of Bourbon-Parma, The Countess of Bardi (1982)
5. Mr. Edwin de Roy van Zuydewijn (1966, m. 2001-2006, div)
6. Princess Anita van Oranje-Nassau (1969, m. 2005)
7. Mr. Tjalling Siebe ten Cate(1975)
8. Mr. Albert Brenninkmeijer (1974. m. 2012)
9. Princess Aimée van Oranje-Nassau (1977, m. 2005)
10. Eva Marie Valdez Guillermo (1979, m 2009)
34. His maternal 1st cousins 1x removed are:
1. Carlos Hugo Roderik Sybren Klynstra de Bourbon-de Parme (1997)
2. Anastasia (Anna) van Lippe-Biesterfeld van Vollenhoven (2001)
3. Isabella Lily Juliana van Vollenhoven (2002)
4. Lucas van Lippe-Biesterfeld van Vollenhoven (2002)
5. Samuel Bernhard Louis van Vollenhoven (2004)
6. Felicia van Lippe-Biesterfeld van Vollenhoven ( 2005)
7. Emma Francisca Catharina van Vollenhoven (2006)
8. Magali Margriet Eleonoor van Vollenhoven (2007)
9. Pieter Anton Maurits Erik van Vollenhoven (2008)
10. Benjamin Pieter Floris van Vollenhoven (2008)
11. Miss Julia Carolina Catharina ten Cate (2008)
12. Eliane Sophia Carolina van Vollenhoven (2009)
13. Isabel Christina Guillermo (2009)
14. Julián Jorge Guillermo (2011)
15. Miss Paola Cecilia Laurentien ten Cate (2011)
16. Princess Luisa Irene Constance Anna Maria of Bourbon-Parma, The Marchioness of Castell’Arquato (2012)
17. Princess Cecilia Maria Johanna Beatrix of Bourbon-Parma, The Countess of Barceto (2013)
18. Willem Jan Johannes Pieter Floris van Vollenhoven (2013)
19. Princess Zita Clara of Bourbon-Parma (2014)
20. Miss Alaïa-Maria Irene Cécile Brenninkmeijer (2014)
21. Prince Carlos Enrique, Hereditary Prince of Bourbon-Parma (2016)
22. Princess Gloria Irene of Bourbon-Parma (2016)
23. Master Xavier Albert Alphons Brenninkmeijer (2016)
35. He shares a birthday with Prince Faisal bin Al Hussein of Jordan, who is 9 years his senior.
36. He shares a birthday with Princess Luisa Maria of Belgium,  Archduchess of Austria-Este, who was born on his 26th birthday.
37. His astrological sign is Libra.