Prince Guillaume was born in
Betzdorf Castle. He attended secondary school in
Luxembourg and
Switzerland, and received his baccalaureate in
Grenoble in 1982. He continued his studies at the
University of Oxford in the United Kingdom, and later at
Georgetown University in Washington, D.C., where he graduated in 1987. Guillaume was presented the degree Doctor of Humane Letters, honoris causa, at
Sacred Heart University's Academic Convocation and Induction of the Class of 2011 on 10 September 2007. The official ceremony welcomed the first-year students to SHU with a formal academic procession and messages from the faculty, student representatives, and president Anthony J. Cernera, PhD. Guillaume worked for six months at the
International Monetary Fund in Washington, and spent two years working for the
Commission of the European Communities in Brussels. He is currently a director of
ArcelorMittal. On the night of 10 to 11 September 2000, Prince Guillaume and Princess Sibilla were involved in a serious car accident near
Paris. Guillaume was in a coma for almost a month. The transfer of the throne between his father Grand Duke Jean and his brother
Henri was postponed from 28 September to 7 October. == Marriage and children ==