* A pseudonym: Perhaps an author has chosen this name for their works. Without further information, it's impossible to know.
* A misspelling: There may be a similar name, such as "Horatio Miller" or "Hamilton Miller," that you're thinking of.
* An unknown author: It's possible they've written works, but they are not well-known or have published independently.
To find out more, you could:
* Check online databases: Use author databases like Goodreads or WorldCat to see if any results come up.
* Provide more context: If you have any more information about the author or their works (genre, time period, specific titles), it would be helpful to identify them.
Let me know if you have any additional details!