Aarne-Thompson Classification
According to the Aarne-Thompson system of classifying folktale plots, the tale of Bluebeard is type 312. Another such tale is The White Dove, an oral French variant. The type is closely related to Aarne-Thompson type 311, the heroine rescues herself and her sisters, in such tales as Fitcher's Bird, The Old Dame and Her Hen, and How the Devil Married Three Sisters. The tales where the youngest daughter rescues herself and the other sisters from the villain is in fact far more common in oral traditions than this type, where the heroine's brother rescues her. Other such tales do exist, however; the brother is sometimes aided in the rescue by marvelous dogs or wild animals.
Some European variants of the ballad Lady Isabel and the Elf Knight, Child ballad 4, closely resemble this tale. This is particularly noteworthy among some German variants, where the heroine calls for help, much like the calls to Sister Anne in Bluebeard, and is rescued by her brother.
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