* The name is misspelled: Double-check the spelling of the name.
* The person is not well-known: They may be a less famous actor or a background performer.
* They are not in the public domain: Their information may be private or not readily available online.
To find more information, you could try:
* Searching for them on IMDb: IMDb is a comprehensive database for movies and TV shows.
* Looking for them on other entertainment websites: Try searching on sites like Rotten Tomatoes, Metacritic, or TV Guide.
* Using a search engine: Use keywords like "Gert van Tonder actor" or "Gert van Tonder film."
If you can provide more details about the person, such as their profession, approximate age, or a specific movie or TV show they might have been in, it could help narrow down the search.