William I of Württemberg child Karl I of Württemberg
Firstly on 8 June 1808 in Munich to Caroline Augusta (1792–1873), daughter of King Maximilian I of Bavaria (1756–1825) and Princess Augusta Wilhelmine of Hesse-Darmstadt (1765–1796). They divorced in 1814, without issue;
Secondly on 24 January 1816 in Saint Petersburg, Russia, he married his first cousin Grand Duchess Catherine Pavlovna of Russia (1788–1819), daughter of Emperor Paul I of Russia (1754–1801) and Princess Sophie Dorothea of Württemberg (1759–1828) by whom he had two daughters:
Princess Marie Friederike Charlotte of Württemberg (1816–1887) who married Alfred, Count von Neipperg (1807–1865);
Princess Sophie of Württemberg (1818–1877) who married King William III of the Netherlands (1817–1890).
Thirdly on 15 April 1820 in Stuttgart he married another first cousin, Duchess Pauline Therese of Württemberg (1800–1873), a daughter of Duke Louis of Württemberg (1756–1817) and Princess Henrietta of Nassau-Weilburg (1780–1857), by whom he had one son and heir and two further daughters:
Princess Catherine of Württemberg (1821–1898) who married Prince Frederick of Württemberg (1808–1870) by whom she was the mother of King William II of Württemberg (born 1848–1921) the last King of Württemberg who succeeded his uncle King Charles I of Württemberg and ruled from 1891 until the abolition of the kingdom in 1918.
King Charles I of Württemberg (born 1823–1891), who succeeded his father as king of Württemberg. A homosexual, he married Grand Duchess Olga Nikolaevna of Russia, the daughter of Tsar Nicholas I of Russia, and leaving no issue was succeeded by his nephew King William II of Württemberg (born 1848–1921);
Princess Augusta of Württemberg (1826–1898) who married Prince Hermann of Saxe-Weimar-Eisenach (1825–1901). One of her daughters, Pauline of Saxe-Weimar-Eisenach, married Charles Augustus, Hereditary Grand Duke of Saxe-Weimar-Eisenach.
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