In the first story the King is in a 16th century 'diving suit', which if not odd enough in itself, has no air tank or air source while he is under water for minutes doing battle with a giant sea monster.
In the credits the name of the Italian composer Girolamo Frescobaldi (1584-1643) is misspelled 'Frescobladi'.
The renaissance guitar that Princess Violet plays appears that it may have synthetic strings rather than gut strings.
Jonah plunges his knife into the root of a tree to bring forth a spring of water, telling Elias that as long as the water flows clear, then all is well with him. The tree appears to be a Ficus macrophylla or Moreton Bay Fig Tree from Queensland and New South Wales, Australia, and first described in 1807. It is unlikely that any large specimens of these trees were growing in Europe during the period in which the movie is set.