Marie-Thérèse de la Poëze d’Harambure1 
From 16 June 1934, her married name became le Verdier. From 31 March 1940, her married name became de Belzunce. Her married name became von Arenberg.
Children of Marie-Thérèse de la Poëze d’Harambure and Henri René Marie de Belzunce-Castelmauron, Marquis de Belzunce
- Laetitia Marie Madelaine Susanne Valentine de Belzunce-d’Arenberg+1 b. 2 Sep 1941
- Roderigue Henri Jean Louis Marie de Belzunce b. 8 Aug 1942
Sigismund Otto Erzherzog von Österreich1

Sigismund Otto Erzherzog von Österreich was born on 21 April 1966 at Lausanne, SwitzerlandG.1 He is the son of Leopold Franz Erzherzog von Österreich and Laetitia Marie Madelaine Susanne Valentine de Belzunce-d’Arenberg.1 He married Elyssa Juliet Edmonstone, daughter of Sir Archibald Bruce Charles Edmonstone of Duntreath, 7th Bt. and Juliet Elizabeth Deakin, in 1999.2 He and Elyssa Juliet Edmonstone were divorced on 25 June 2013.2
He gained the title of Erzherzog von Österreich.1 He gained the title of Principe Sigismund di Toscana. He was given the name of Sigismund Otto Maria Josef Gottfried Heinrich Erik Leopold Ferdinand von Habsburg-Lothringen at birth. His marriage to Elyssa Juliet Edmonstone was annulled in 2016.2
Children of Sigismund Otto Erzherzog von Österreich and Elyssa Juliet Edmonstone
- Leopold Amadeo Erzherzog von Österreich2 b. 9 May 2001
- Tatyana Maria Theresia Laetitia Juliet Erzherzogin von Österreich3 b. 3 Mar 2003
- Maximilian Erzherzog von Österreich2 b. 27 May 2004
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
- [S130] Wikipedia, online http;//www.wikipedia.org. Hereinafter cited as Wikipedia.
- [S1122] Peerage News, online http://peeragenews.blogspot.co.nz/. Hereinafter cited as Peerage News.
Guntram Maria Erzherzog von Österreich1
He gained the title of Erzherzog von Österreich.1
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Elisabeth Erzherzogin von Österreich1
She gained the title of Erzherzogin von Österreich.1 Her married name became von Braun.
Children of Elisabeth Erzherzogin von Österreich and Friedrich Hubert Edler von Braun
- Bernadette Edler von Braun b. 21 Jul 1966
- Dominik Edler von Braun b. 21 Sep 1967
- Felix Edler von Braun b. 23 Apr 1970
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Friedrich Hubert Edler von Braun1
Children of Friedrich Hubert Edler von Braun and Elisabeth Erzherzogin von Österreich
- Bernadette Edler von Braun b. 21 Jul 1966
- Dominik Edler von Braun b. 21 Sep 1967
- Felix Edler von Braun b. 23 Apr 1970
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Alice Erzherzogin von Österreich1
She was given the name of Alice Marie Christine Margarete Antoinetta Josefa Rosa Helene Adelgunde Eleonora von Habsburg-Lothringen at birth. She gained the title of Erzherzogin von Österreich.1 Her married name became Manno.
Children of Alice Erzherzogin von Österreich and Vittorio Manno, Barone Manno
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Vittorio Manno, Barone Manno1
He gained the title of Barone Manno.1
Children of Vittorio Manno, Barone Manno and Alice Erzherzogin von Österreich
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Maria Antoinette Erzherzogin von Österreich1
She gained the title of Erzherzogin von Österreich.1 She was given the name of Marie Antoinette Christine Josefa Rosa Margarethe Pia Angela Theresia Gabriele Isabella Ludnilla Zita Ruperta von Habsburg-Lothringen at birth. Her married name became von Proff.
Children of Maria Antoinette Erzherzogin von Österreich and Hans Walter Baron zu Irmich
- Maximilian Gottfried Luitpold Baron zu Irmich b. 24 Feb 1976
- Johanna Margarete Baronin zu Irmich b. 27 Jun 1979
- [S12] C. Arnold McNaughton, The Book of Kings: A Royal Genealogy, in 3 volumes (London, U.K.: Garnstone Press, 1973), volume 1, page 367. Hereinafter cited as The Book of Kings.
Emanuel Alfred Leopold Franz Erbprinz zu Salm-Salm1,2

He gained the title of Erbprinz zu Salm-Salm.1 He fought in the First World War.
Children of Emanuel Alfred Leopold Franz Erbprinz zu Salm-Salm and Maria Christina Erzherzogin von Österreich
- Isabelle Prinzessin zu Salm-Salm+ b. 13 Feb 1903
- Rosemary Friederike Isabella Eleonore Henriette Antonia Prinzessin zu Salm-Salm+1 b. 13 Apr 1904
- Nikolaus XIII Fürst zu Salm-Salm+ b. 14 Feb 1906, d. 15 Jan 1988
- Cäcilie Prinzessin zu Salm-Salm+ b. 8 Mar 1911, d. 11 Mar 1991
Elisabeth Franziska Erzherzogin von Österreich1 
Children of Elisabeth Franziska Erzherzogin von Österreich and Georg Julius Kaspar Konrad Graf von Waldburg zu Zeil und Trauchburg
- Marie Valerie Gräfin von Waldburg zu Zeil und Trauchburg+1 b. 28 Jun 1913
- Klementine Maria Hedwig Elisabeth Agnes Walburga Gräfin von Waldburg zu Zeil und Trauchburg b. 5 Oct 1914, d. 21 Sep 1941
- Elisabeth Hedwig Maria Franziska Walburga Xaveria Gräfin von Waldburg zu Zeil und Trauchburg b. 23 Feb 1917, d. 18 Jun 1979
- Franz Josef Vitus Xaver Georg Wunibald Graf von Waldburg zu Zeil und Trauchburg+ b. 7 Mar 1927