Klaus Baudelaire is Lemony Snicket

As we cannot see the characters when reading books, there has been a theory that Klaus and Lemony have too much in common to be two separate persons.

Due to the theory Klaus's passion for books is a reason why he could start writting one himself. Moreover the theory could possibly explain how Lemony knew about Baudelaire children, although in the series and books it's stated he investigated the case and met Baudelairesi in fron of hotel Denouement. Another reason known for this theory, known to be false, is Lemony's dedication to Beatrice, since she was Klaus's mother, so Klaus was dedicated to her. The theory works with another theory that Klaus could have survived The End and changed his name to Lemony Snicket as for Jacques Snicket that Baudelaires met in the Village of Fowl Devotees. After that he documented his life in books. This theory was published before the Netflix series came out. It is more than highly unlikely ot be true. All of its parts can be proven false, despite being an interesting theory.

Source: https://www.youtube.com/watch?v=B6q3PmRVftE