Boniface de Castellane (1897-1946)

Upon the death of his father in Paris on 20 October 1932, he succeeded him as the Marquis de Castellane.^[1]

A diplomat during World War II, he was serving as the Second Secretary of the Embassy of France, London at the time of France's collapse during the invasion of the Nazis in 1940. During that summer, he was made Chargé d'affaires of the Embassy following the retirement of the other French diplomats. In response to the shelling of French ships at Oran, Algeria by British squadron, Castellane called Viscount Halifax, then Foreign Secretary, on 8 July 1940 requesting "the passports of the French diplomats in England. On July 19 nearly 1,500 French diplomats, other officials and soldiers left London for France, headed by the Marquis."^[7]

On 6 January 1921, while still known as the Count of Castellane, he was married to Yvonne Constance Patenôtre (1896–1981), in Paris with his uncle, Frank Gould, as best man.^[9] She was a daughter of Jules Patenôtre (formerly the French Ambassador to the United States) and Eleanor Elverson (the sister of James Elverson Jr. and daughter of publisher James Elverson Sr. by his wife Sallie Duvall, the three of them owners of The Philadelphia Inquirer).^[10] Together, they were the parents of three daughters:^[11]

• Raymonde de Castellane (1921–2006), who married Robert Bertin in 1952.^[11]
• Pauline de Castellane (b. 1923), who married diplomat Charles Jehannot d'Huriel de Bartillat.^[11]
• Elisabeth de Castellane (1928–1991), who married Jean Bertrand Jacques Adrien Nompar, Count of Caumont La Force in 1948.^[11]

The Marquess died on 5 February 1946. His funeral was held at the Church of Saint-Honoré-d'Eylau.^[7]