Charles-Maurice de Pourtales
Anna de Pourtales
Her married name became Frotier de Bagneux.
Child of Anna de Pourtales and Guy Frotier de Bagneux
- Florence Frotier de Bagneux b. 1967
Guy Frotier de Bagneux
Child of Guy Frotier de Bagneux and Anna de Pourtales
- Florence Frotier de Bagneux b. 1967
Florence Frotier de Bagneux
Boson de Talleyrand-Périgord, 6° Duc de Tallyrand1 
He gained the title of 6° Duc de Talleyrand.
- [S6720] Alex Echaniz, “re: de Rozas Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 July2013. Hereinafter cited as “re: de Rozas Family.”
Helen Morton 
Her married name became de Talleyrand-Perigord.
Silvia Victoria Rodríguez de Rivas y Díaz de Erazo1
Her married name became Hennessy.1
Child of Silvia Victoria Rodríguez de Rivas y Díaz de Erazo and Baron Éric de Posch-Pastor y de Camperfelden
Child of Silvia Victoria Rodríguez de Rivas y Díaz de Erazo and Henri de Castellane, Comte de Castellane
- [S6720] Alex Echaniz, “re: de Rozas Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 14 July2013. Hereinafter cited as “re: de Rozas Family.”
Antoinette Marie Josephine Morel
Her married name became de Talleyrand-Perigord.
Adalbert de Talleyrand-Périgord, Duc de Montmorency 
He gained the title of Duc de Montmorency.
Child of Adalbert de Talleyrand-Périgord, Duc de Montmorency and Carmen Ida Melanie Aguado y MacDonnel
- Louis de Talleyrand-Perigord, Duc de Montmorency b. 22 Mar 1867, d. 27 Sep 1951
Carmen Ida Melanie Aguado y MacDonnel 
Her married name became de Talleyrand-Perigord.
Child of Carmen Ida Melanie Aguado y MacDonnel and Adalbert de Talleyrand-Périgord, Duc de Montmorency
- Louis de Talleyrand-Perigord, Duc de Montmorency b. 22 Mar 1867, d. 27 Sep 1951