| Élaine Greffulhe|| Henri de Gramont|
| 29 September 1879 (1879-09-29) Paris|
scientist and industrialist
Henry Greffulhe (father-in-law)
2 August 1962, Mortefontaine, Oise, France
Agénor de Gramont, Marguerite de Rothschild
Agenor, duc de Gramont, Mayer Carl von Rothschild, Luise von Rothschild
Antoine-Geneviève-Héraclius-Agénor de Gramont
Armand de Gramont Wikipedia
Armand Antoine Agénor de Gramont (1879–1962) was a French nobleman, scientist and industrialist. He was known by the courtesy title of "Duke of Guiche" until 1925, when he became the 12th Duke of Gramont. He was the eldest son of Antoine Alfred Agénor de Gramont, 11th Duke of Gramont and Marguerite de Rothschild.
In 1904, he married Élaine Greffulhe, the daughter of Count Greffulhe and his wife, Élisabeth de Riquet de Caraman-Chimay (said to be a model for the Duchess of Guermantes in Marcel Proust’s novel, À la recherche du temps perdu).
A rare film clip shows Proust (in bowler hat and gray coat) at Gramont's wedding in 1904. Proust’s wedding gift to Gramont was apparently a revolver in a leather case inscribed with verses from the bride’s childhood poems.