It's possible that:
* The name is misspelled: Double-check the spelling. There might be a similar name with a slightly different spelling.
* The person is not well-known: They may be a lesser-known actor or involved in smaller projects that aren't widely documented.
* The information is incorrect: The source of this information may be inaccurate.
If you can provide any additional information, such as the genre of the movie or television show, the year it was released, or any other details, it might be easier to identify the person you're looking for.