| | August C. Onstenk 1924–2000 | | | | Pieter (Piet) Herman Hendrik August Onstenk 1898–1973 Gerharda Hendrina Lens 1901–1985 | | | | Pieter Hendrik Herman August Onstenk 1860–1931 Elisabeth Helversteijn 1857–1908 Theresia Maria Maurer 1869–1940 | | | | Hendrik Valentijn Onstenk 1829–1908 Hillegonda Swildens 1834–1902 | | | | Petrus (Pieter) Onstenk 1796–1876 Anna Catharina De Vries 1789–1869 | | |
| | | Johannes Swildens 1804–1878 | | |
| | | Johannes Swildens 1804–1878 | | |
|
|
| | | Johannes Wilhelmus Helversteijn 1825–1891 Elisabeth van den Heuvel 1834–1905 | | | | Hendrik Helversteijn 1802– Maria Josina van Dusseldorp 1797–1869 | | |
| | | Pieter van den Heuvel 1807–1850 Elisabeth Marks 1809–1854 | | |
|
|
| | | Maria Theresia Bechel 1839– | | | | | Johann Georgh Bechel 1806–1843 Catharina Josepha Mohr 1814–1882 | | |
|
|
|
|
| | | Hendrik Daniël Lens 1868–1906 Augustina Catharina van der Upwick 1868–1940 | | | | Adriana Hendrina Schuller 1825–1894 |
|
|
|
|
|
|