Parents
- Octave Didelot (1812 - 1886), baron Didelot, vice-amiral
- Eugénie de La Hubaudière (1831 - 1915)
Family
- Married on June 17, 1891 in Brest, with Marie Denis de Trobriand (1869 - 1947), issuing
Marie (1892 - 1952)- Renée Berthe Marie (1894 - 1913)
Jean (1895 - 1963)- Hélène (1896 - 1970)
- Jacques François Xavier (1897 - 1897)