The Hon. Estelle Emily Spencer de Courcy was a member of the Conservative and Unionist Women's Franchise Association (CUWFA), who lived at The Grange, Marle Hill, Cheltenham; she was a signatory of the 1912 book presented to Sir James Agg Gardner, in recognition of his support for women's suffrage (Gloucestershire Archives, catalogue reference D5130/6/6).

On the 1911 census she was listed as unmarried, and had no occupation. Her father was a tea planter, and had inherited wealth.

She died on 13 December 1984.