Through her youngest daughter Agnès, she was a grandmother of Edmée de Loys-Chandieu (1892–1945), who married Alexander, Count of Hoyos, son of Georg Anton, Count of Hoyos and the former Alice Whitehead (daughter of British engineer Robert Whitehead).
Alexander's aunt, Marguerite, was married to Herbert von Bismarck, the eldest son of Chancellor Otto von Bismarck.
Edmée's daughter, Melanie Hoyos, also married a member of the Bismarck family, Count Gottfried von Bismarck-Schönhausen, and their descendants include Stephanie zu Guttenberg.

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Through her youngest daughter Agnès, she was a grandmother of Edmée de Loys-Chandieu (1892–1945), who married Alexander, Count of Hoyos, son of Georg Anton, Count of Hoyos and the former Alice Whitehead (daughter of British engineer Robert Whitehead). Alexander's aunt, Marguerite, was married to Herbert von Bismarck, the eldest son of Chancellor Otto von Bismarck. Edmée's daughter, Melanie Hoyos, also married a member of the Bismarck family, Count Gottfried von Bismarck-Schönhausen, and their descendants include Stephanie zu Guttenberg.
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Mélanie de Pourtalès