- Born on October 2, 1892 in Lunéville
- Deceased on September 19, 1979 in Saint-Germain-en-Laye, at the age of 86 years
Parents
- Charles Etienne de Percy (1847 - 1917), colonel
- Anne Marie de Lallemant de Liocourt (1862 - 1926)
Family
- Married on November 16, 1917 in La Ciotat, with Roger de Lannoy (1890 - 1978), officier de cavalerie, issuing
- Private
Private- Private
- Private
- Private
Occupations
- archiviste