Professor Stith Thompson classified the tale type as Aarne–Thompson–Uther ATU 850, "The Birthmarks of the Princess".
[2] French historian François Delpech (fr) noted that strange birthmarks in folktales indicated a supernatural or royal origin of the characters, and mentioned the tale type in that regard.
He interpreted the "hidden birthmark" as a sign of sovereignty, linked to the fate of the protagonist: to ascend to the throne.
[3] Stith Thompson suggested the tale type ATU 850 originated from genuine European oral folklore, since an ancient literary version is not attested.
[4] This geographical analysis seems to have been confirmed by scholars Richard Dorson and Kurt Ranke, who claimed that the tale type was "narrated throughout Europe as well as in North and South America".
[5] August Leskien claimed that this "Märchenkreis" is very widespread in Slavic tradition, with the same plot: the princess sees the dancing animals (sheep, pigs, etc.)