- Born on September 17, 1933 in Etterbeek
- Deceased on July 17, 1993 in Woluwe-Saint-Lambert, at the age of 59 years
Parents
- Étienne de Béthune-Sully (1899 - 1978)
- Ghislaine de Potter d'Indoye (1909 - 1993)
Family
- Married on February 24, 1962, with Private, issuing
- Private