Henri-Godefroi-Bernard-Alphonse, prince de La Tour d'Auvergne, marquis de Saint-Paulet (21 October 1823 – 5 May 1871) was a French politician of the Second Empire who twice served as Minister of Foreign Affairs for Emperor Napoleon III. De La Tour d'Auvergne was Ambassador of France to London (1863–69), in which capacity he was a signatory to the Treaty of London in 1867. Personal life He was the son of Melchior de La Tour d'Auvergne-Lauraguais (1794-1849), 1st Marquess of Saint-Paulet and 2nd Baron of the Empire, and Laurence de Chauvigny de Blot. He was married to Emilie Céleste Montault des Illes (1822-1857), daughter of Charles Montault des Illes and Emilie Adélaïde Bertrand. His only son was: Charles-Laurent-Bernard-Godefroi de La Tour d'Auvergne-Lauraguais (1852-1903), 2nd Prince de La Tour d'Auvergne-Lauraguais, 3rd Marquess of Saint-Paulet and 4th Baron of the Empire. Married in 1875 to Marie Léontine Ysoré d'Hervault de Pleumartin, daughter of Anne Antoine Ysoré d'Hervault, 7th Marquis de Pleumartin, and Césarine de Gars de Courcelles. He had three children: Henri de La Tour d'Auvergne-Lauraguais (1876-1914), 3rd Prince de La Tour d'Auvergne-Lauraguais, 4th Marquess of Saint-Paulet and 5th Baron of the Empire. Married in 1904 to Elisabeth Berthier de Wagram (1885–1960), daughter of Alexandre Berthier, 3rd Prince of Wagram (grandson of Louis-Alexandre Berthier) and Bertha Clara von Rothschild (daughter of Mayer Carl, Baron von Rothschild). Charles de La Tour d'Auvergne-Lauraguais (1877-1940) Césarine de La Tour d'Auvergne-Lauraguais (1879-1947) Ancestry Honours and titles Marquis de France (succeeded his father in the marquisate of Saint-Paulet, 1849) Grand-croix, Légion d'honneur Knight, Order of Malta Knight, Order of Pius IX Knight, Saxe-Ernestine House Order Knight Grand Cross, Order of the Red Eagle Knight Commander, Order of the Two Sicilies Knight Commander, Order of St. Gregory the Great Knight of the Order of the Gold Lion of the House of Nassau See also House of La Tour d'Auvergne List of Ambassadors of France to the United Kingdom References Princes of la Tour d'Auvergne 1823 births 1871 deaths Politicians from Paris French marquesses Nobles of the Holy See Bonapartists French Foreign Ministers French Senators of the Second Empire Ambassadors of France to the United Kingdom Ambassadors to the Grand Duchy of Tuscany Ambassadors of France to the Holy See Ambassadors of France to Prussia 19th-century French diplomats Collège Stanislas de Paris alumni Grand Croix of the Légion d'honneur Knights of Malta Knights of the Order of Pope Pius IX Knights Commander