Madame de Noailles was a wealthy woman with houses in England, Paris, Montpellier and the French Riviera, which she moved between frequently. She was the daughter of William Gordon Coesvelt junior and Anna Maria Baring, and the granddaughter of Henry Baring and Maria Matilda Baring. She was a foundress of the De Noailles School, Oxford.
She financially supported Elizabeth Blackwell during her struggle to become the first female doctor in the United States.
She purchased an Italian peasant girl, Maria Pasqua Abruzzesi, who sat as an artists" model in Italy and Paris. She was an important shareholder of English Woman"s Journal and thus a major supporter of the Langham Place group, which campaigned on several issues from the mid 1850s to the mid 1860s.