- Born on April 14, 1850 in Brest
- Deceased on December 25, 1928, at the age of 78 years
Parents
- Armand Fidèle Jean-Baptiste Denis de Keredern de Trobriand (1799 - 1866), officier de marine
- Fanny Denis de Keredern de Trobriand (1812 - )
Family
- Married with Jeanne Marie Anne Le Saulnier de La Cour (1855 - )