Adriana Margaretha van der Crab 1889– ir Johan Marie Louwerse 1888–1954 | | | | Joost Johan Louwerse 1848–1908 Marie Therese Douwes Dekker 1858–1931 | | | | Hendrik Karel Louwerse 1818–1897 |
| | | Jan Douwes Dekker 1816–1864 Wilhelmina Frederica Antonia van Leeuwen 1819–1846 Louise Marie Elise Adolphine Bousquet 1826– | | | | Engel Douwes Dekker 1791– Sietske Eeltjes Klein 1791– | | |
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