

| Wilhelm Gustav Friedrich LANDGRAF | |
| *: | 17 Jun 1881 |
| Sieversdorf, Ostprignitz-Ruppin, Brandenburg, Germany | |
| +: | 30 Okt 1900 |
| Berlin, Berlin, Berlin, Germany | |
|
| Christian Wilhelm LANDGRAF | |
| *: | 19 Feb 1846 |
| Nißmitz-Freyburg, Burgenlandkreis, Saxony-Anhalt, Germany | |
| +: | vor 1900 |
| Lindenau, Ostprignitz-Ruppin, Brandenburg, Germany | |
| Auguste Sophie Henriette KLEMANN | |
| *: | 2 Jun 1850 |
| Sieversdorf, Ostprignitz-Ruppin, Brandenburg, Germany | |
| oo: | 8 Okt 1880 |
| Sieversdorf, Ostprignitz-Ruppin, Brandenburg, Germany | |
| +: | 18 Feb 1919 |
| Sieversdorf, Ostprignitz-Ruppin, Brandenburg, Germany | |