Demorgny was born in the commune in the Charente department, Nouvelle-Aquitaine, France, on 10 March 1913. She walked 3 kilometers to school and back every day in wooden shoes. She was awarded her certificat d’études primaires aged 12 and went on to work as a chambermaid in Charente and later Paris.
Demorgny married and had five children, all of whom she outlived between 2014 and 2017. In 1959, she briefly met then-US President Dwight D. Eisenhower in Paris.
At the age of 108, Demorgny enjoyed going for walks with her friend Janine Rousseau. She would stay at Rousseau’s house for several nights every week and lived independently the rest of the time. She has an unreported number of grandchildren and great-grandchildren.
Demorgny was first noted for her longevity at the age of 106, when she, along with two other centenarians, had a short biography published in an article. On her 108th birthday, she was visited by Benoît Gagnadour, the mayor of Champagne-Mouton.
Her age was verified by the Les Centenaires Français, and validated by the ESO on 15 May 2023. The validation was confirmed as valid by LongeviQuest on 10 March 2024.
On 10 June 2024, following the passing of 112-year-old Augusta Oteiza, she became the oldest living person in the region of Nouvelle-Aquitaine.
* “Charente : Solange Demorgny est en pleine forme à 108 ans !” – France 3 Régions, 15 March 2021
* “La doyenne des Charentais a 110 ans” – France Bleu, 6 April 2023