1835 - 
1891-
| Ernst Emil Knappmann | |
| *: | 2 Mrz 1891 |
| D-Bochum-Steinkuhl | |
1892-
| Elfriede Knappmann | |
| *: | 27 Sep 1892 |
| D-Bochum-Steinkuhl | |
1862-
| Lisette Platzmann | |
| *: | 3 Sep 1862 |
| D-Bochum | |
| Friedrich Wilhelm Knappmann | |
| *: | 22 Aug 1858 |
| D-Bochum-Steinkuhl | |
| oo: | 25 Okt 1890 |
| D-Bochum | |
1899-
| Hedwig Platzmann | |
| *: | 21 Jun 1899 |
| D-Bochum-Laer | |
1902-
| Emil Platzmann | |
| *: | 8 Aug 1902 |
| D-Bochum-Laer | |
| Sophie Friederike E l l a Peddenbruch | |
| *: | 23 Okt 1904 |
| D-Bochum | |
| oo: | 15 Jul 1927 |
| D-Bochum-Querenburg | |
1904-
| Emma Elisabeth Platzmann | |
| *: | 5 Dez 1904 |
| D-Bochum-Laer | |
| Wilhelm Heinrich Platzmann | |
| *: | 4 Sep 1867 |
| D-Bochum-Laer | |
1872-
| Emma Elisabeth Mette | |
| *: | 27 Okt 1872 |
| D-Bochum-Laer | |
| oo: | 9 Sep 1892 |
| D-Bochum | |
|
| Friedrich Peter Platzmann | |
| *: | 6 Sep 1835 |
| D-Wengern (Witten) | |
1831-1871
| Lisette Backhaus | |
| *: | 30 Okt 1831 |
| +: | 15 Mrz 1871 |
| D-Bochum-Uemmingen | |
| Caroline Lisette Schroeer | |
| *: | 19 Jun 1845 |
| D-Bochum-Uemmingen | |
| oo: | 3 Sep 1871 |
| D-Bochum-Uemmingen | |
