It's possible:
* The name is misspelled: Perhaps the name is slightly different. Try searching for variations.
* The person is not well-known: If they haven't been in major projects, their information might not be widely available online.
* The person works behind the scenes: They may be involved in film or television production but not as an actor.
To help me find more information, please provide:
* Any additional details you know about Robert Archer Lynn: Do you have a photo, birthdate, or any other information?
* The type of projects you're looking for: Are you interested in movies, television shows, documentaries, or something else?
With more details, I might be able to locate information about this person.