It's possible that:
* The name is misspelled. Perhaps you're thinking of someone with a similar name.
* It's a fictional character. This could be from a book, movie, or game.
* It's a local figure. There might be someone with that name who is known in a specific community or region.
To help me figure out who you're referring to, please provide more context. For example:
* Where did you hear this name?
* What kind of information are you looking for about them?
With more information, I might be able to help you find the Marcus Canul you're interested in.