Jean, the Soldier, and Eulalie, the Devil's Daughter

Jean, the Soldier, and Eulalie, the Devil's Daughter (French: La belle Eulalie) is a French fairy tale collected by Achille Millien.

The fable is classed as Aarne-Thompson type 313 (A girl helps the hero to flee) and revolves about a transformation chase, followed by an episode of The Forgotten Bride. Others of this type include The Water Nixie, The Foundling-Bird, The Master Maid, and The Two Kings' Children. The motifs contain notable similarities to the legend of Jason and Medea, in the tasks assigned to the hero, and in the help from a woman connected with the villain.