Profile Text
Place of Birth: Vic-Fezensac, Gers, France
Date of Birth: 25 June, 1965
Ethnicity: French
Jean Castex is a French politician. He has served as Prime Minister of France , from 3 July, 2020 to 16 May, 2022; as well as, President of SNCF, since 3 November, 2025. He has also been Mayor of Prades, Pyrénées-Orientales, from 18 March, 2008 to 3 July, 2020, Deputy Secretary-General to the President, from 28 February, 2011 to 15 May, 2012, President of Conflent Canigó, from 7 January, 2015 to 3 July, 2020, and President of RATP, from 28 November, 2022 to 2 November, 2025.
He is the son of Nicole Andrée Berthe (Fontanier) and Claude Castex. Prime Minister Castex is married to Sandra Ribeylague, with whom he has four children.
Prime Minister Castex’s patrilineal ancestry can be traced back to his fifth great-grandfather, Bernard Castex.
Prime Minister Castex’s paternal grandfather was Marc Claude Albert Castex (the son of René François Castex and Marie Félicie Eugénie Paveillac). Marc, who was born in Marambat, Gers, was a Senator, representing Gers. René was the son of Paul Castex and Marie Anne Gélas. Félicie was the daughter of Joseph Paveillac and Marie Dautin.
Prime Minister Castex’s paternal grandmother was named Marie Jeanne Courbet.
Prime Minister Castex’s maternal grandfather was André Jean Louis Fontanier (the son of Mathieu Henri Fontanier and Mathilde Mélanie Doutre). André was born in Gimont, Gers. Mathieu was the son of Louis Fontanier and Marie Julie Laurentie. Mathilde was the daughter of Jean Antoine Doutre and Marie Françoise Dupin.
Prime Minister Castex’s maternal grandmother was named Augusta Henriette Chaubon. Henriette was born in Saint-Sauvy, Gers.
Sources: Genealogies of Jean Castex – https://www.geni.com https://gw.geneanet.org https://gw.geneanet.org https://gw.geneanet.org https://gw.geneanet.org https://gw.geneanet.org
Birth record of Prime Minister Castex’s maternal grandfather, André Jean Louis Fontanier – http://www.archives32.fr