How does previous knowledge of the artist affect the aesthetics of a piece if aesthetics are based on emotional response?

Having information of an artist before looking at one of their pieces, does it hinder or help your aesthetic response? I didn't see the relation between aesthetics and knowledge of the artist until my last post. Before then I saw no relation; if a piece causes an emotional reaction from you or you find its beauty to be like nothing you've ever seen before, what does it matter who the artist is? If you simply go off of what you see, it doesn't make a difference who the artist is, however, knowing who the artist is, or simple facts about the artist, do change your reaction to the piece. Like with Dutton's example in his essay Artistic Crimes about van Meegeren's forgery of Vemeer Christ and the Disciples at Emmaus. Once it was known that the painting was not by Vemeer, the esteem that was placed on it was instantly taken away by the fact that the forger was a lesser known artist. Or was it just the financial value placed on the painting that was taken away? If you look at it from another angle, like in my previous post, if you are looking at a painting of, say a butterfly, until you find out who the artist is or something about them. Based on your knowledge of the artist, your opinion of the painting will change. If the person who painted it is someone famous, your reaction will be different than one you might have if you know the artist to be autistic or impaired in some way. An aesthetic response is not solely based on the beauty of a piece, it is also emotional, and those emotions can be changed with the knowledge, or lack of, you have of the piece. This is why previous knowledge of the artist can affect the emotions of your aesthetic response.