He is married to Henriette comtesse d'Oultremont de Wégimont et de Warfusée.
They got married on October 23, 1877 at Bruxelles, he was 32 years old.
Child(ren):
Sur Presles: http://www.patrimoinepreslois.be/ernest-gravy-et-le-patrimoine-preslois-asbl/dossiers/historique-et-personnages-du-chateau-de-presles
The data shown has no sources.