It's possible that:
* He is not a professional actor: He may have a different profession, and his name may not be associated with the entertainment industry.
* He has a different name: He may use a different name in his acting career or have a pseudonym.
* His projects are not widely known: He may have been involved in smaller productions or independent projects that are not widely accessible or documented.
To find more information about Kirk Penberthy, you could try searching for him on film databases like IMDb or other online resources.