I'm sure I have seen this theme in literature or film more than once:
An older male author is flattered by a young, female student, after she says she loves his books. They start a relationship. One morning, he asks her what book of his she likes most. When she names a title, he realises that it is not his books she admires, but the books by a more famous author with the same family name. He is heartbroken, his ego thrashed, and he throws out the girl he suddenly considers terribly stupid.
When and where and by who was this theme first described?
I saw this most recently in the film Elle by Paul Verhoeven, based on the novel Oh... by Philippe Djian. I'm certain I've encountered the theme before and neither Djian nor Verhoeven was the first to describe it.