Ludwig Gerdes Fokke Houtrouw 1867– | | |
| | Grietjewina Luekjedina Dreesmann 1830–1890 Thede Janssen Barth 1828–1907 | | |
| | Focke Nannen Dreesmann 1797–1837 Barberina Alberts Ohling 1802–1836 | | |
| | Nanne Roelfs Dreesmann 1750–1838 Elske Fokken Hessenius 1759–1842 | | |
| | Roelf Ennen Gerdes (ab 1746: Dreesmann) 1720–1781 | | | | Nanne Roelfs Dreesman 1682–1751 | | | | Roelf (Rudolf) Dreesman 1659–1733 | | | | Johann Dreesmann 1627–1702 | | | | Rudolfus Dreesmann 1579–1650 |
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