It's possible there is some confusion as to the person's identity, or that they are not listed on public databases.
To help find the information you're looking for, it would be helpful to provide:
* Volledige naam: Including any middle names or alternate spellings.
* Elke andere identificerende informatie: Such as age, hometown, or any other projects they may be known for.
With more information, I can assist you in finding the information you need.