Christopher Little, the agent who signed J. K. Rowling, died earlier this month. The opening paragraphs of this Times obituary describe how his office received three chapters of the first Harry Potter book, Rowling having picked “his name from a list of literary agents in an Edinburgh library, thinking that he sounded like a character from a children’s story”.
https://www.thetimes.co.uk/article/christopher-little-obituary-03s3l3tgs