Bertha Gräfin von Plettenberg
Her married name became Perez-Sangrador.
Jose Perez-Sangrador
Maria Bernadette Gräfin von Plettenberg
Her married name became Venegas-Cortez.
Rafael Venegas-Cortez 
Luitgard Gräfin von Plettenberg
Her married name became Schuler.
Boris Schuler
Mathilde Baronin von Luninck
Adelheid Baronin von Luninck 
From 7 October 1964, her married name became von Fürstenberg.
Children of Adelheid Baronin von Luninck and Oswald Baron von Fürstenberg
- Gregor Baron von Fürstenberg b. 2 Nov 1965
- Angela Baronin von Fürstenberg b. 15 Oct 1966
- Regina Baronin von Fürstenberg b. 1967
- Guido Baron von Fürstenberg b. 1968
Oswald Baron von Fürstenberg
Children of Oswald Baron von Fürstenberg and Adelheid Baronin von Luninck
- Gregor Baron von Fürstenberg b. 2 Nov 1965
- Angela Baronin von Fürstenberg b. 15 Oct 1966
- Regina Baronin von Fürstenberg b. 1967
- Guido Baron von Fürstenberg b. 1968
Gregor Baron von Fürstenberg