- Born on October 29, 1869 in Lorient
- Deceased on February 25, 1956 in Brussels, at the age of 86 years
Parents
- Octave Montrelay (1834 - 1908), notaire et banquier à Lorient, administrateur de la Banque de France et de la Caisse d'épargne de Lorient
- Thérèse Jullien (1844 - 1910)
Family
- Married on June 25, 1890 in Lorient, with Alphonse Emsens (1856 - 1921), industriel à Bruxelles, fondateur d'Eternit Belgique en 1905, issuing