Constantijn Christof Frederik Aschwin, Prince of the Netherlands, Prince of Orange-Nassau, Jonkheer van Amsberg, was born in Utrecht on 11 October 1969. He is the third son of Princess Beatrix and Prince Claus. The Prince has two brothers: King Willem-Alexander (born in 1967) and Prince Friso (1968-2013).

Prince Constantijn

Prince Constantijn.


The Prince received his primary education at the Nieuwe Baarnse School in Baarn and his secondary education at the Eerste Vrijzinnig Christelijk Lyceum in The Hague, where he gained his VWO (pre-university education) certificate in 1987. During the 1987/1988 academic year, Prince Constantijn attended language courses in France and Italy.

In 1995 he gained his master's degree in law from Leiden University where he specialised in civil law. In 2000 he studied business economics at the European Institute of Business Administration in Fontainebleau (INSEAD).

Marriage and family

Prince Constantijn married Laurentien Brinkhorst in The Hague on 17 May 2001. The marriage was blessed on 19 May 2001 in the Grote of St Jacobskerk in The Hague.

Prince Constantijn and Princess Laurentien have three children. Their first daughter Eloise was born on 8 June 2002, their son Claus-Casimir on 21 March 2004 and their second daughter, Leonore, on 3 June 2006. The family lives in The Hague.


On 1 July 2016 Prince Constantijn was appointed Special Envoy for StartupDelta2020. The Prince will be at the helm of the successor to StartupDelta – with which he was closely involved as an advisor – for the next 18 months. Prince Constantijn is an independent adviser on corporate innovation and jointly initiated Startup Fest Europe, a five-day festival of events throughout the Netherlands. He is also Director of Digital Technology and Macro Strategy at Macro Advisory Partners in London. In January 2017 the Prince joined the 15-strong High Level Group of Innovators that advises the European Commission on improving Europe's performance in breakthrough, market-creating innovation.

In 2017 Prince Constantijn and Princess Laurentien set up the Number 5 Foundation, a charity which is currently developing various innovatory initiatives to address a range of social issues.

The Prince began his working life in the cabinet of the European Commissioner, Hans van den Broek. He then studied business economics at the European Institute of Business Administration in Fontainebleau (INSEAD) and had a work placement at the International Finance Corporation in Washington DC. The Prince went on to work as a management consultant with Booz Allen & Hamilton in London and as a policy researcher for RAND Europe in Leiden and Brussels, where he was subsequently appointed head of the Information Policy and Economics Team. In 2008 Prince Constantijn set up the Brussels office of RAND Corporation, which he headed until 2010.

The Prince worked as an adviser on EU communications at the Dutch Ministry of Foreign Affairs from 2003 to 2008.

On 1 October 2015 Prince Constantijn was appointed temporary Edge Fellow at Deloitte’s Center for the Edge. In this position he advises on cooperation between the parties relevant to the innovation climate in the Netherlands and Europe.

Public appointments

  • Chair of the Advisory Board of the SIDN Fund. The fund, set up and managed by the Foundation for Internet Domain Registration in the Netherlands (SIDN), supports projects which aim to strengthen the economic and social value of the internet in the Netherlands.
  • Chair of the Prince Bernhard Nature Fund

Honorary posts

  • Honorary Chair of the Prince Claus Fund;
  • Patron of the National Musical Instrument Fund;
  • Patron of the World Press Photo Foundation;
  • Patron of the Oskar Back Study Foundation for young violinists.