- Born on February 11, 1923 in Etterbeek
- Deceased on November 20, 2011 in Ottignies-Louvain-la-Neuve, at the age of 88 years
- Burial on November 25, 2011
Parents
- Marcel de Posch (1894 - 1947), baron de Posch, officier
- Marthe d'Hoop (1895 - 1976)
Family
- Married on May 3, 1952 in Woluwe-Saint-Lambert, with Jacqueline de Briey (1929 - 2019), comtesse de Briey, issuing
- Private