Willem IV of Orange-Nassau (1711-1751), prince of Nassau-Dietz and Orange 1711, 
stadholder of Friesland 1711, Groningen 1718, Drenthe and Guelders 1722, 
Zealand, Holland, Utrecht and Overijssel 1747, stadholder of The Netherlands 
1748, married 1734 Anna of Great-Britain and Hannover (1709-1759), the Princess 
Royal. Two daughters were still-born. Other children: 
    Carolina (1743-1787) married 1760 Karl Christian of Nassau-Weilburg 
    (1735-1788). A daughter was stillborn, a son died young. Other children: 
        Georg Wilhelm Belgicus (1760-1762) 
        Wilhelm Ludwig Flamand "the colonel Lutz" (1761-1770) 
        Marie of Nassau-Weilburg (1764-1802) 
        Louise of Nassau-Weilburg (1765-1837) married 1786 prince Heinrich XIII 
        Reuß zu Greiz (1747-1817) 
        Friedrich Wilhelm (1768-1816), prince of Nassau-Weilburg 1788, married 
        1788 Luise of Sayn-Hachenburg-Kirchberg (1772-1827). Children: 
            Wilhelm (1792-1839), duke of Nassau 1816, married 1st Luise of 
            Saxe-Hildburghausen (1794-1825), 2nd Pauline of Württemberg 
            (1810-1856). Three daughters died young. Other children: 
                Therese (1815-1871) married 1837 Peter of Oldenburg (1812-1881) 
                Adolphe (1817-1905), duke of Nassau 1839-1866, grandduke of 
                Luxembourg 1890-1905 after the death of king Willem III of The 
                Netherlands, married 1st Elisabeth Mikhailowna of Russia 
                (1826-1845), 2nd Adelheid of Anhalt (1833-1916). The present 
                grandduke of Luxembourg descends from his 2nd marriage. 
                Wilhelm (1819-1823) 
                Moritz (1820-1850) 
                Wilhelm (1823-1828) 
                Marie of Nassau (1825-1902) married 1842 Hermann of Wied 
                (1814-1864). Children: 
                    Elisabeth "Carmen Sylva" (1843-1916) married 1869 king Carol 
                    I of Rumania (1839-1914). They are the ancestors of the last 
                    king of Rumania. 
                    Wilhelm of Wied (1845-1907) married 1871 Marie of The 
                    Netherlands (1841-1910). Issue. 
                    Otto of Wied (1850-1862) 
                Helene (1831-1888) married 1853 George Victor of Waldeck-Pyrmont 
                (1831-1893). After her death he remarried in 1891 Luise of 
                Holstein-Sonderburg (1858-1936) and had a son Wolrad Friedrich 
                (1892-1914). Children of his 1 marriage to Helene of Nassau: 
                    Sophie of Waldeck-Pyrmont (1854-1869) 
                    Pauline of Waldeck-Pyrmont (1855-1925) married 1881 Alexis 
                    von Bentheim und Steinfurt (1845-1919) 
                    Marie of Waldeck-Pyrmont (1857-1882) married 1877 king 
                    Wilhelm II of Württemberg (1848-1921). Their only daughter 
                    Pauline of Württemberg (1877-1965) married 1898 Friedrich of 
                    Wied (1872-1945). 
                    Adelheid Emma of Waldeck-Pyrmont (1858-1935), regent of The 
                    Netherlands 1890-1898, married 1879 king Willem III of The 
                    Netherlands (1817-1890). 
                    Helene of Waldeck-Pyrmont (1861-1922) married 1882 Leopold 
                    of Great-Britain (1853-1884), a son of Queen Victoria. 
                    Friedrich (1865-1946), prince of Waldeck-Pyrmont 1893-1918, 
                    married 1895 Bathildis of Schaumburg-Lippe (1873-1962). They 
                    had 3 children. 
                    Elisabeth of Waldeck-Pyrmont (1873-1961) married 1900 
                    Alexander of Erbach-Schönberg (1872-1944) 
                Nikolaus (1832-1905) contracted a morganatic marriage in 1868 to 
                Natasja Pushkin (1836-1913), formerly wife of Michael 
                Leontievitch von Dubelt and daughter of Alexander Sergeievitch 
                Pushkin, the famous poet. They had two daughters and one son, 
                the count of Merenberg. 
                Sophie (1836-1913) married 1857 king Oscar II of Sweden and 
                Norway (1829-1907). They are the ancestors of the present king 
                of Sweden. 
            Auguste (1794-1796) 
            Henriëtte (1797-1829) married 1815 archduke Karl of Austria 
            (1771-1847) 
            Friedrich (1799-1845) contracted a morganatic marriage in 1840 to 
            Anna Ritter (1802-1864) and had one daughter. 
        Caroline of Nassau-Weilburg (1770-1828) married 1787 Karl Ludwig of 
        Wied-Runckel (1763-1824) 
        Karl of Nassau-Weilburg (1775-1807) 
        Amalie of Nassau-Weilburg (1776-1841) married 1st 1793 Victor II of 
        Anhalt-Bernburg-Schaumburg (1767-1812), 2nd 1813 Friedrich von 
        Stein-Liebenstein zu Barchfeld (1777-1849) 
        Henriette of Nassau-Weilburg (1780-1857) married 1797 Ludwig of 
        Württemberg (1756-1817) 
    Anna (b+1746) 
    Willem V Batavus of Orange-Nassau (1748-1806), stadholder of The Netherlands 
    1751-1795 (deposed), married 1767 Wilhelmina "Willemijntje" of Prussia 
    (1751-1820). One son died in infancy, another child was still-born. Other 
    Children: 
        Frederica Louise Wilhelmina (1770-1819) married 1790 Karl George August 
        of Brunswick (1766-1806). No issue. 
        Willem I Frederik of The Netherlands (1772-1843), heir. 
        Willem George Frederik (1774-1799)