The daughter of Emanuele Filiberto, duke of Savoy, and his mistress Laura Cravola, was apparently named "Marie"[1]. Maria, born at Vercelli in 1556, married Filippo d'Este on January 20, 1570, and had issue (Charles-Philibert, Sigismond, Beatrice[1] and Margaret[2]). She died at Torino in 1580[1].
Wikipedia (Italy) mentions a Francesca, daughter of Emanuele Filiberto and Laura Crevola, who married Gabriel Vial, but does not specify a source[3].
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