Canterbury tales: Narrative Personae.
A persona is used as an image that a writer presents of (mostly) himself but with certain differences. The author uses one or more characteristics in a created character and explores this characteristic in this person. A persona does not have to be the same persona in different situations. It is more likely that for every different situation a new persona is created with new characteristics explored. A persona is precise and typically a stereotype for the target audience. He is carefully defined by the author and details about an entire person are included in his persona .
The difference between the narrative Chaucer and the authorial Chaucer is actually very clear if you pay close attention. In the general prologue, it is the narrator Chaucer who introduces the pilgrims and tells about what they are going to do. He praises the characteristics that we, as a reader of the story, (and also the author Chaucer) know are flawed. Because the narrator writes down his impressions of the pilgrims from memory, whom he does and does not like, and what he chooses and chooses not to remember about the characters, tells us as much about the narrator's own prejudice as it does about the characters themselves. At the end of the prologue it is Chaucer the author who makes his presence. He makes the claim "if you do not like the story, just turn the page". He is claiming that he is just the person who is telling the story. .
The Miller's tale is a short sometimes hilariously told fantasy story which involves a lot of humor, sarcasm and uses lots of "dirty" jokes. The story is about an old carpenter (John) who is married with a young wife (Alison). This couple has a spare room and decides to rent it to a student (Nicholas). The student tries to seduce the wife (with singing for example) but she refuses although she wants him. Nicholas convinces John of a flood equal to Noah's story and they build three boats which they attach high in the house.