Who is Frank E Mumbles?

There is no widely known person or character named "Frank E Mumbles". It is possible this is a:

* Misspelling: Perhaps you meant a different name. Check your spelling carefully.

* Fictional character: Maybe this name is from a book, movie, or TV show that is not well-known.

* Local figure: It's possible this is someone known in a specific community or region.

* Made-up name: It's also possible you simply invented this name.

Please provide more context or information about where you encountered this name so I can help you further.