| | | | | | Ludwig (Louis) Merck 1854–1913 Emmy Eigenbrodt 1862–1948 | | | | Carl Wilhelm Merck 1823–1885 Marie Susanne Hoffmann 1824–1899 | | | | Heinrich Emanuel Merck 1794–1855 Magdalena Charlotte Hoffmann 1797–1877 | | |
| | | Johann Wilhelm Karl Hoffmann 1793–1871 Louise Johannette Müller 1803–1869 | | |
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