* The name is misspelled: Could you double-check the spelling?
* The person is not widely known: Perhaps Tony Calvert works behind the scenes in the film or television industry, or is involved in smaller, independent productions.
To help me find information, could you tell me:
* Any other details about Tony Calvert: Do you know anything about their profession (actor, director, etc.), any specific roles, or any related information?
* The time period you are interested in: Are you looking for recent projects, or something from the past?
With more information, I might be able to find something about Tony Calvert.