| | Paul Robert Ritscher 1894–1974 Maria Johanna Kamperdijk 1894–1972 | | | | Paul Alfred Ritscher 1856–1920 Henriette van Engelen 1859–1931 | | | | August Wilhelm Julius Ritscher 1820–1911 Emilie Agnes Sickert 1829–1867 | | | | Carl Gottlob Ritscher 1793–1868 Wilhelmine Johanna Regina Tillich 1790–1864 | | |
| | | Wilhelm Traugott Sickert 1789–1853 Rosina Johanna Hartmann 1798–1865 |
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| | | Johannes van Engelen 1828–1897 | | | | Johannes van Engelen 1804–1893 | | |
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