Prince Guillaume was educated in Luxembourg and Switzerland before obtaining his baccalaureate in Grenoble in 1982. He later studied at Oxford University, in Great Britain, and at Georgetown University, in Washington DC, from where he graduated in 1987.
Following his university studies, Prince Guillaume spent six months working for the International Monetary Fund in Washington DC, and two years working for the European Commission in Brussels.
Prince Guillaume married Sibilla Weiller on 8 September 1994 at St Louis Cathedral in Versailles, France.
He and Princess Sibilla have three children: Prince Paul-Louis (born on 24 March 1998), Prince Leopold and Princess Charlotte (both born on 2 May 2000).
Since 1992, Prince Guillaume has been President of Lux-Development, the agency charged with the task of executing the Luxembourg government's bilateral programme of development aid.
Prince Guillaume is also President of the Youth Merit Foundation.
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