When did John Cowley - actor die?

There is no known actor named John Cowley. It is possible that you are thinking of a different name, or that the actor you are referring to is not well-known.

Could you please provide more information about this actor, such as:

* Full name: Is there a middle name or any other names he may be known by?

* Nationality: Where was he from?

* Notable roles: Was he known for any particular films or TV shows?

With more information, I may be able to help you find the death date of the actor you are looking for.