Question: When is Guillaume De Sax's wife's birthday?
Sentence (from "Cécile Sorel"): Céline Émilie Seurre, known as Cécile Sorel or the Comtesse de Ségur, by marriage (7 September 1873 in Paris – 3 September 1966 in Trouville-sur-Mer) was a French comic actress.
Relevant evidence: Yes