* The name is misspelled. There could be a slight error in the spelling, making it difficult to find information.
* The individual is not widely known. Perhaps they are a lesser-known actor or have only been involved in minor projects.
* There's a mix-up with someone else's name. It's possible you're thinking of a different individual.
To help me find the correct information, please provide me with:
* Any additional details you remember about Donald Grobe: For example, their age, location, or any specific roles they might have played.
* The type of project they were involved in: Was it a film, TV show, play, or something else?
* Any other information that might be helpful: For instance, the approximate year of the project or the name of the production company.
With more information, I can assist you in locating the relevant information.