Duchess Isabelle von Württemberg (born 30 November 1960), twin of Duke Christoph. Duchess Sibylla von Württemberg (born 29 May 1963), she has one son with Wolfgang Merz. Duchess Christiane von Württemberg (born 16 September 1973), she married Till Kitzing (born 26 August 1972) in 2003.
Louis-Nicolas d'Avout (10 May 1770 – 1 June 1823), better known as Davout, 1st Duke of Auerstaedt, 1st Prince of Eckmühl, was a French military commander and Marshal of the Empire who served during both the French Revolutionary Wars and the Napoleonic Wars.
Early life. Born as Wilhelm Karl Florestan Gero Crescentius, Count of Württemberg, he was the elder son of Wilhelm, 1st Duke of Urach (the head of a morganatic branch of the Royal House of the Kingdom of Württemberg), and his second wife, Princess Florestine of Monaco, occasional Regent of Monaco and daughter of Florestan I, Prince of Monaco.
The duke then issued a proclamation called the Brunswick Manifesto (July 1792), written by the French king's cousin, Louis Joseph de Bourbon, Prince de Condé, the leader of an émigré corps within the Allied army, which declared the Allies' intent to restore the king to his full powers and to treat any person or town who opposed them as rebels to be condemned to death by martial law.
Louis Philippe next envisaged an alliance with Austria via the marriage of his son to Archduchess Maria Theresa (born 1816), daughter of Archduke Karl, Duke of Teschen (German: Herzog von Teschen). Queen Marie Amélie was highly favourable to such a match as she was herself a daughter of an Austrian archduchess ( Maria Carolina of Austria ), and Archduke Karl was not opposed to it.
Auguste Charles Eugène Napoléon de Beauharnais, Duke of Leuchtenberg (9 December 1810 – 28 March 1835) was the first prince consort of Maria II of Portugal. Besides being the 2nd Duke of Leuchtenberg and 2nd Prince of Eichstätt , he also held the Brazilian noble title of Duke of Santa Cruz .
The second branch descends from Duke Louis of Württemberg, and belonged to the Teck family. This branch became extinct at the death of George Cambridge, 2nd Marquess of Cambridge in 1981. It was not considered dynastic due to the morganatic marriage of Duke Alexander of Württemberg to Countess Claudine Rhédey von Kis-Rhéde.