Dear princess,
You can conduct a search in google and other search engines based on a name and birth date. I havce used on line detective services which I find are accurate, and used their services to track down my son. The price they charge for the reports are reasonable compared to having a detective to do the work for me. For example, a Detective charges 350 dollars or more to do the same work. The differenece is, that the detective can physically confirm that the person you seek lives at that location.
Tax Preparer
GPHR Cert; U.S. Treasury Tax Advocacy Panel appointee