 DATE: The lyrics to the song that Fleance sings at Macbeths banquet  for Duncan at Inverness are taken from the poem "Merciles Beautè" by  Geoffrey Chaucer. In the context of the film this extraneously  inserted song is itself an anachronism, as Chaucer lived in the  fourteenth century and Shakespeares "Macbeth" historically takes  place in the eleventh century.