It's possible that:
* The name is slightly misremembered or misspelled. A quick search with variations of the name might reveal a match.
* The person is not a public figure. They may have worked on projects in a behind-the-scenes capacity, or they may have acted in small, independent projects.
* The person is relatively unknown. Even if they have been in movies or TV shows, their roles might not be widely publicized.
If you have more information about George Loving Jackson, such as a specific movie or TV show they might have been in, or any other details about them, please share that information. I'd be happy to try and find more information.