"the castle of poor Geneviève de Brabant"

In the medieval story of Geneviève de Brabant, the chaste Geneviève is falsely accused of infidelity by a rejected suitor, Golo. She is sentenced to death and escapes to the forest, spending six years hiding in a cave, cared for by a roe. Meanwhile, her husband Siegfried discovers Golo's treachery; after six years he finds her by following the roe to the cave where is she lives. The story was made into an operetta by Offenbach in 1859.