Peerage Record – 8952

     Elisabeth de MacMahon was born on 19 June 1899 at Lunéville, Lorraine, France^G. She was the daughter of Marie Armand Patrice de MacMahon, 2nd Duc de Magenta and Marguerite Louise Marie Françoise d‘Orléans, Princesse de France. She married Henri de Plan, Comte de Sieyes on 22 September 1924 at Paris, France^G. She died on 28 September 1951 at age 52.
     Her married name became de Plan.

     Henri de Plan, Comte de Sieyes was born on 6 November 1883 at Aix-en-Provence, Provence, France^G. He married Elisabeth de MacMahon, daughter of Marie Armand Patrice de MacMahon, 2nd Duc de Magenta and Marguerite Louise Marie Françoise d‘Orléans, Princesse de France, on 22 September 1924 at Paris, France^G. He died on 20 July 1953 at age 69.
     He gained the title of Comte de Sieyes.

     Marguerite de Plan de Sieyes was born on 22 February 1926 at Paris, France^G. She was the daughter of Henri de Plan, Comte de Sieyes and Elisabeth de MacMahon. She married, firstly, Baron Charles-Octave Begougne de Juniac on 21 December 1946. She and Baron Charles-Octave Begougne de Juniac were divorced in 1952. She married, secondly, Jean-Louis Gillieron on 20 July 1965 at Ollon-sur-Aigle, Switzerland^G. She died on 30 October 1992 at age 66.
     From 21 December 1946, her married name became Begougne de Juniac. Her married name became Gillieron.

     Baron Charles-Octave Begougne de Juniac was born on 13 July 1916 at Paris, France^G. He married Marguerite de Plan de Sieyes, daughter of Henri de Plan, Comte de Sieyes and Elisabeth de MacMahon, on 21 December 1946. He and Marguerite de Plan de Sieyes were divorced in 1952.

     Jean-Louis Gillieron was born on 24 April 1916. He married Marguerite de Plan de Sieyes, daughter of Henri de Plan, Comte de Sieyes and Elisabeth de MacMahon, on 20 July 1965 at Ollon-sur-Aigle, Switzerland^G.

     Arnaud Gillieron was born on 5 May 1958 at Paris, France^G. He is the son of Jean-Louis Gillieron and Marguerite de Plan de Sieyes. He married Genevieve de Montbrun on 22 December 1991 at Artagnan, France^G.

     Genevieve de Montbrun was born in 1961. She married Arnaud Gillieron, son of Jean-Louis Gillieron and Marguerite de Plan de Sieyes, on 22 December 1991 at Artagnan, France^G.
     Her married name became Gillieron.

     Irène Gillieron was born on 5 February 1957 at Paris, France^G. She is the daughter of Jean-Louis Gillieron and Marguerite de Plan de Sieyes. She married Fernando de Escoriaza y Quijano.¹

     Fernando de Escoriaza y Quijano married Irène Gillieron, daughter of Jean-Louis Gillieron and Marguerite de Plan de Sieyes.¹

     Leonor de Escoriaza y Gillieron was born on 30 April 1990 at Geneva, Switzerland^G.¹ She is the daughter of Fernando de Escoriaza y Quijano and Irène Gillieron.¹