- Born on September 6, 1880 in Saint-Cloud
- Assassinated on March 2, 1927 in Monte-Carlo, at the age of 46 years
Parents
- Konstanty Wincenty Maria Radziwiłł (1850 - 1920), propriétaire
- Louise Blanc (1856 - 1911), propriétaire
Family
- Married on June 17, 1905 in Paris, with Claude de Gramont (1885 - 1942), divorced
- Married on April 5, 1921 in Cannes, with Dolorès Radziwiłł (1886 - 1966)
Occupations
- capitaine