Willem I Frederik of The Netherlands (1772-1843), prince of the Netherlands 
1813, king of the Netherlands and grandduke of Luxemburg 1815-1840 (abdicated), 
Belgium became independent in 1830, married 1st 1791 his cousin, Frederika 
Louise Wilhelmina of Prussia (1774-1837), 2nd 1841 Henriette d'Oultremont 
(1792-1864), countess of Nassau 1841, who had been lady in waiting to his 1st 
wife. Children of his 1st marriage: 
    Willem II of The Netherlands (1792-1849), heir. 
    Willem Frederik Karel (1797-1881) married 1825 his cousin, Louise Augusta of 
    Prussia (1808-1870). One child was stillborn. The others are: 
        Louise (1828-1871) married 1850 Karl XV of Sweden and Norway 
        (1826-1872). Children: 
            Louisa of Sweden (1851-1926) married 1869 Frederik VIII of Denmark 
            (1843-1912). They are ancestors of both the present queen of Denmark 
            and the present king of Norway. 
            Karl Oscar of Sweden (1852-1854) 
        Willem Frederik (1833-1834) 
        Willem Frederik (1836-1846) 
        Marie (1841-1910) married 1871 Wilhelm of Wied (1845-1907). Children: 
            Wilhelm Friedrich (1872-1945), prince of Wied 1907-1918, married 
            1898 Pauline of Württemberg (1877-1965). They had two sons. The 
            eldest married a countess of Stolberg-Wenigerode and his eldest son 
            married a princess of Waldeck-Pyrmont. 
            Hermann of Wied (1874-1877) 
            Wilhelm I of Albania (1876-1945), sovereign of Albania in 1914, 
            married 1906 Sophia of Schönburg-Waldenburg (1885-1936). They had a 
            daughter and a son.  
            Victor of Wied (1877-1946) married 1912 Gisela of Solms-Wildenfels 
            (1891-1975). They had two daughters. 
            Luise of Wied (1880-1965) 
            Elisabeth of Wied (1883-1938) 
            Pauline (1800-1806) 







    Marianne (1810-1883),  above, married 1830, divorced 1849 her cousin, 
    Albert of Prussia (1809-1872). Marianne had a love affair with Johannes van 
    Rossum (1809-1873). Children: 
        Charlotte of Prussia (1831-1855) married 1850 Georg II of Saxe-Meiningen 
        (1826-1914) 
        Albrecht of Prussia (1837-1906) married 1873 Marie of Saxe-Altenburg 
        (1854-1898). They had 3 sons. 
        Elisabeth of Prussia (b+1840) 
        Alexandrine of Prussia (1842-1906) married 1865 Wilhelm of 
        Mecklenburg-Schwerin (1827-1879), a son of Paul Friedrich of 
        Mecklenburg-Schwerin (1800-1892), see above. 
        Johan Willem (1849-1861), illigitimate