Le Masque de fer

Le Masque de fer was a French film directed by Henri Decoin, released in 1962 and inspired by the story of The Man in the Iron Mask, as well as the novels by Alexandre Dumas The Three Musketeers and Le Vicomte de Bragelonne.

In a scene not in the original book, dArtagnan grabs Isabelle de SaintMars, pulls up her dress, and spanks her to punish her for not keeping a promise she had made.

Source: Wikipedia