The couple had four children:
Bernard d'Harcourt, Comte de Harcourt (1925–1958). Married first to Zenaide Rachevsky. Second to Yvonne de Contades, had issue.
Gilone d'Harcourt (born 1927), who married Count Antoine of Dreux-Brézé, has issue. Isabelle d'Harcourt (1927–1993), who married Prince Louis Murat, had issue. Monique d'Harcourt (born 1929), who married Count Alfred Boulay de la Meurthe, has issue.
Bruno d'Harcourt took up automobile racing where he met the celebrated female driver, Hellé Nice. Bruno d'Harcourt died at age 30 in Casablanca, Morocco when his Bugatti crashed at the Anfa racetrack while on a practice run for the 1930 Moroccan Grand Prix. The day prior to the race, Harcourt took his Bugatti out for an early morning practice run on the road course and crashed when he ran off the first bend.
Severely injured, he died a few days later in hospital.