| Hendrik Alexander Seijffardt |
| Hendrik Alexander Seijffardt | |
| G: | 1 nov 1872 |
| Breda | |
| O: | 6 feb 1943 |
| Den Haag | |
| Alida Elisabeth Bervoets |
| Alida Elisabeth Bervoets | |
| G: | ca. 1876 |
| Den Haag | |
| H: | 28 jun 1898 |
| Teteringen | |
| O: | Ja, datum echter onbekend |
| August Lodewijk Seyffardt |
| August Lodewijk Seyffardt | |
| G: | 14 dec 1840 |
| Den Helder | |
| O: | 10 nov 1909 |
| Den Haag | |
| Catharina Louisa de Hollander |
| Catharina Louisa de Hollander | |
| G: | ca. 1844 |
| Breda | |
| H: | 30 jul 1867 |
| Breda | |
| O: | Ja, datum echter onbekend |
| André Pieter Seyffardt |
| André Pieter Seyffardt | |
| G: | 2 dec 1878 |
| Den Haag | |
| O: | 8 feb 1950 |
| Arnhem | |
| Cornelia Joanna Bast |
| Cornelia Joanna Bast | |
| G: | ca. 1882 |
| Hoorn | |
| H: | 26 apr 1905 |
| Hoorn | |
| O: | 25 apr 1960 |
| Leiden | |
| Johanna Jacoba de Hollander | |
| H: | 19 jul 1876 |
| Breda | |
| O: | 13 dec 1883 |
| August Ludwig Wilhelm Christian Seijffardt | |
| G: | 9 sep 1806 |
| Kampen | |
| O: | 9 dec 1859 |
| Curaçao | |
| Amélie Charlotte de Chalmot |
| Amélie Charlotte de Chalmot | |
| G: | 31 jan 1813 |
| Kampen | |
| H: | 5 feb 1840 |
| Kampen | |
| O: | Ja, datum echter onbekend |
| Ulrice Elionore Wilhelmina von Bentheim |
| Ulrice Elionore Wilhelmina von Bentheim | |
| O: | Ja, datum echter onbekend |
| August Ludwig Wilhelm Seijffardt |
| August Ludwig Wilhelm Seijffardt | |
| G: | ca. 1761 |
| O: | 9 sep 1833 |
| Kampen | |