Princesse Marie Helene de Polignac
Her married name became Bartholoni.
Jean Francois Bartholoni
Princesse Marie Christine de Polignac
Princesse Yolande de Polignac 
Her married name became des Roys d’Eschandelys.
Children of Princesse Yolande de Polignac and Francois des Roys d’Eschandelys, Marquis des Roys
- Helene des Roys+ b. 3 Mar 1932
- Comte Etienne des Roys b. 31 May 1935
- Claude des Roys+ b. 9 May 1939
Francois des Roys d’Eschandelys, Marquis des Roys 
He gained the title of Marquis des Roys.
Children of Francois des Roys d’Eschandelys, Marquis des Roys and Princesse Yolande de Polignac
- Helene des Roys+ b. 3 Mar 1932
- Comte Etienne des Roys b. 31 May 1935
- Claude des Roys+ b. 9 May 1939
Comte Etienne des Roys
He gained the title of Comte des Roys.
Helene des Roys
Children of Helene des Roys and Jean de Merode, Prince de Merode
- Amaury de Merode, Prince de Merode+ b. 4 Oct 1955
- Maximilien de Merode, Prince de Merode b. 24 Jan 1957
Prince Peter Sanguszko
Child of Prince Peter Sanguszko and Claude des Roys
- Prince Paul Sanguszko+ b. 16 Jan 1973
Prince Paul Sanguszko
Child of Prince Paul Sanguszko and Severine Ialongo
- Olympia Sanguszko1 b. 17 Sep 2010
- [S5042] Prince Paulo Sanguszko, “re: Sanguszko Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 16 December 2010. Hereinafter cited as “re: Sanguszko Family.”
Princesse Elisabeth de Polignac 
Her married name became Lambert de Cambray.
Children of Princesse Elisabeth de Polignac and Eugene Lambert de Cambray
- Barone Charles-Armand Lambert de Cambray+ b. 27 Apr 1930
- Barone Henri Lambert de Cambray+ b. 4 Jul 1931
- Louis-Francois Lambert de Cambray+ b. 25 Feb 1933
- Gerald Lambert de Cambray b. 4 Apr 1936
