His work marks the urban landscape of Brussels : He married Eugenie Ernestine Clémence Hortense Masson in Ixelles on 2 October 1894.

She was born in Ixelles on 9 July 1872, daughter of Captain Stanislas Jean Ernest Masson, knight of the Ordre of Léopold, and Marie Eugenie Louise Clémence Mounoury.

His daughter, Germaine Van Dievoet (born Brussels 26 September 1899, died 30 October 1990 at Uccle), was a championship swimmer who took part in the 1920 Summer Olympics in Antwerp.

He also had a sister, Louise van Dievoet, (born in Brussels on 3 November 1880, died in Paris on 26 December 1964) who married André Gachassin-Lafite, Viscount of Orthez, Knight of the Legion of Honor, captain to the 3rd regiment of Hunters of Africa (quartered with Constantine, Algérie).

He was Military Assistant-Attache at the Embassy of France in Brussels, then Member of the High Commission of the Ministry for the War near the factories Schneider, Creusot (1915–1918).