1826 - 
1910-
| Wilhelm Plessmann | |
| *: | 27 Jan 1910 |
| D-Bochum-Stiepel | |
1903-
| Friedrich Emil Plessmann | |
| *: | 18 Feb 1903 |
| D-Bochum-Stiepel | |
1903-1983
| Mathilde Elfriede Plessmann | |
| *: | 18 Feb 1903 |
| D-Bochum-Stiepel | |
| +: | 25 Jan 1983 |
| D-Hattingen | |
1870-1942
| Adeline Voskuhl | |
| *: | 29 Aug 1870 |
| D-Bochum-Stiepel | |
| +: | 23 Okt 1942 |
| D-Bochum-Stiepel | |
1879-
| Friedrich Plessmann | |
| *: | 31 Okt 1879 |
| D-Witten-Herbede | |
| oo: | 29 Mrz 1901 |
| D-Bochum-Stiepel | |
1877-
| Auguste Voskuhl | |
| *: | 1 Aug 1877 |
| D-Bochum-Stiepel | |
|
| F r i e d r i c h Heinrich Voskuhl | |
| *: | 23 Nov 1826 |
| D-Bochum-Stiepel | |
1846-
| Wilhelmine Zur Oven | |
| *: | 4 Jul 1846 |
| D-Bochum-Stiepel | |
| oo: | 19 Aug 1870 |
| D-Bochum-Stiepel | |
