Henri François, comte de Ségur
He was the son of Henri Joseph, comte de Ségur (1661–1737), military commander and duke, and Claude Élisabeth Binet and paternal grandson of Jean-Isaac, marquis de Ségur (d. 1707), military commander and a descendant of François de Ségur, seigneur de Sainte-Aulaye (d. 1605). His first cousin was Nicolas-Alexandre, marquis de Ségur and other relatives include Henri IV, vicomte de Ségur, leader and nobleman, becoming Duke in France and England, and Marguerite de Ségur, HRH Albert, Prince Consort's great-grandmother, also Queen Victoria's great-grandmother making Prince Albert and Queen Victoria second if not first cousins, part of Marquessate. The Ségur name has appeared to be in the Royal line from time to time.
Called le beau Ségur ("the handsome Ségur"), he was Master of the Regent, Philippe d'Orléans' Wardrobe (maître de la garderobe du Régent), and lived in an hôtel in Passy, Paris on a beautiful ten-acre property, which later passed to the Duchess of Valentinois and was named Hôtel de Valentinois after her. (The property is famous for being the residence of Benjamin Franklin for nearly ten years.) On 10 or 12 September 1718, Ségur married in Paris Angélique de Froissy (1702–1785), the Regent's illegitimate daughter, at Cagny. Described as "fresh, white, well-made, strong and intoxicating", Angélique belonged to the inner circle of Louis XV's intimates.
He and his wife had at least five children:
- Philippine Charlotte de Ségur (Paris, 12 July 1719 - Paris, 12 July 1719)
- Henriette Élisabeth de Ségur (Paris, 20 September 1722 - 1747?), unmarried and without issue
- Philippe Henri, marquis de Ségur (Paris, 20 January 1724 - Paris, 3 October 1801), marshal of France in 1783, twin with the below
- Philippe Angelique de Ségur (Paris, 20 January 1724 - Paris, 20 January 1724), twin with the above
- Henriette Césarine de Ségur (1726–1782), married Bertrand Gaich, baron de la Crozes, Knight of Saint-Louis.
In 1723, he bought the castle of Romainville.
He was maréchal de camp in 1734, lieutenant général in 1738, and inspecteur général of the cavalry and the dragoons. He fought in the War of Austrian Succession, where he lost the Battle of Pfaffenhofen but prevented the total destruction of his army.
- Bulletin de la Société historique d'Auteuil et de Passy, Volume 4
- Le Carnet, Volume 19
- The Encyclopaedia Britannica, volume 24