Aglaé Louise Françoise Gabrielle de Polignac (7 May 1768 – 30 March 1803) was the daughter of Gabrielle de Polastron, the favourite and confidante of Marie Antoinette, and her husband, the 1st duc de Polignac.
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Her daughter Corisande Armandine Léonie Sophie de Gramont married Charles Bennet, 5th Earl of Tankerville, and another daughter, Aglaé Angélique Gabrielle de Gramont, was married in turn to Russian general Alexander Lvovich Davydov and French diplomat Horace Sébastiani.