Willem II of The Netherlands (1792-1849), king of The Netherlands 1840, 
grandduke of Luxembourg 1840, married 1816 Anna Pawlowna of Russia (1795-1865). 
Children: 
    Willem III of The Netherlands (1817-1890), heir. 
    Willem Alexander Frederik (1818-1848) 
    Willem Frederik Hendrik (1820-1879), stadholder of Luxembourg 1850, married 
    1st 1853 Amalia of Saxe-Weimar-Eisenach (1830-1872), married 2nd 1878 Maria 
    of Prussia (1855-1888). Their age difference was 35 years. After his death 
    she married Albert of Saxe-Altenburg (1843-1902) in 1885. 
    Willem Alexander Frederik Ernst Casimir (b+1822) 
    Wilhelmine Marie Sophie Louise (1824-1897) married 1842, her cousin, Karl 
    Alexander of Saxe-Weimar-Eisenach (1818-1901), son of Maria Pawlowna of 
    Russia. Children: 
        Karl August of Saxe-Weimar-Eisenach (1844-1894) married 1873 his 2nd 
        cousin, Pauline of Saxe-Weimar-Eisenach (1852-1904). Children: 
            Wilhelm Ernst (1876-1923), grandduke of Saxe-Weimar-Eisenach 
            1901-1918, married 1st 1903 princess Caroline Reuß zu Greiz 
            (1885-1905) married 2nd 1910 Feodora of Saxe-Meiningen (1890-1972). 
            Children: 
                Sophia (1911-1988) married 1938 Friedrich Günther of 
                Schwarzburg-Rudolstadt (1901-1971) 
                Karl August (b1912), pretender of Saxe-Weimar-Eisenach 1923, 
                married 1944 Elisabeth von Wangenheim (b1912) and had 1 son and 
                2 daughters 
                Bernard Friedrich (b1917) married 1943, divorced 1956 Felicitas 
                of Salm-Horstmar (b1920) and had 1 son and 1 daughter 
                Georg "Brena" (b1921), renounced his rights, married 1953 Gisela 
                Janisch (b1930), 3 daughters 
            Bernhard of Saxe-Weimar-Eisenach (1878-1960) 
        Marie of Saxe-Weimar-Eisenach (1849-1922), married 1876 prince Heinrich 
        VII Reuß zu Köstritz (1825-1906) 
        Elisabeth of Saxe-Weimar-Eisenach (1854-1908), married 1886 Johann 
        Albrecht of Mecklenburg-Schwerin (1857-1920)