| August Friedrich Otto Henning Albert v.Plessen | Mathilde! Ida Louise v.Moeller-Lilienstern | ||
| Bernhard Karl Louis John Hans! v.Plessen | Jutta! Elisabeth Fanni Hermine Auguste Ottilie Friederike v.Arnim | ||
| Bernhard! Oskar Adolf Hugo v.Plessen*23.9.1908, +24.2.2003 |