Adolphe Clément married Céleste Angèle Roguet and they had four children, Albert, Angèle, Jeanne and Maurice. Albert died while racing at the 1907 French Grand Prix. Angèle (1880–1972) was widowed from Albert Dumont, an engineer and director at the Levallois factory. Angele then remarried Numa Joseph Edouard "Petit" Sasias (1882–1927), a 'Fonctionnaire aux Affaires Etrangères, ex-Secrétaire à la Présidence du Conseil, with whom she had one son. Jeanne became divorced from Fernand Charron, racing driver and manager of the plant at Levallois-Perret, subsequently living alone. Maurice married Renée Hammond and had three children Andrée, Jacqueline and Albert (nicknamed "Billy" to avoid confusion and memories of his uncle Albert).