It is not explained why Bluebeard murdered his first bride; she could not have entered the forbidden room and found a dead wife.
In the 1812 version published in Grimms' Fairy Tales, Wilhelm Grimm, on p. XLI of the annotations, makes the following handwritten comment: "It seems in all Märchen [fairy tales] of Blubeard, wherein his Blutrunst [flowing of blood] has not rightly explained, the idea to be the basis of himself through bathing in blood to cure of the blue beard; as the lepers. That is also why it is written that the blood is collected in basins."
Maurice Maeterlinck wrote extensively on Bluebeard and in his plays names at least five 6 former wives: Sélysette from .'Aglavaine et Sélysette (1896), Alladine from Alladine et Palomides (1894), both Ygraine and Bellangère from La mort de Tintagiles (1894), Mélisande from Pelléas et Mélisande, and Ariane from Ariane et Barbe-bleue (1907).
In Jacques Offenbach's opera (1866), the five previous wives are Héloïse, Eléonore, Isaure, Rosalinde and Blanche, with the sixth and final wife being a peasant girl, Boulotte, who finally reveals his secret when he attempts to have her killed so that he can marry Princess Hermia.
Béla Bartók's opera A Kékszakállú herceg vára (1911), with the libretto by Béla Balázs, names "Judith", which places her as wife number four, whereas Ariane would be wife number six, but fails to take Judith into account. Bartók's version does not name any of the wives that appear in it. Rather than retelling the original story, the libretto only uses the main characters and setting, and transforms them into a symbolist story.
Anatole France's short story "The Seven Wives of Bluebeard" names Jeanne as the last wife before Bluebeard's death.
Alfred Savoir wrote in the 1920s a play La huitième femme de Barbe-Bleue (Bluebeard's eighth wife) from which Sam Wood and Ernst Lubitsch produced two films, other than starting from the point of being a plus one wife of Bluebeard and that it considers Anatole France's count of his wives, this play or the films share nothing with a description or numbering of the duke's wives.
In Edward Dmytryk's film Bluebeard (1972), Baron von Sepper (Richard Burton) is an Austrian aristocrat known as Bluebeard for his blue-toned beard, and his appetite for beautiful wives. This film names an American beauty named Anne, who discovers a vault in his castle filled with the frozen bodies of his previous wives.