T.F.
K. M...
Everyone is giving you good advice... one thing that they forgot was that you need to DOCUMENT EVERYTHING!!!! I would seek legal advice of some sort before contacting the tribe. Tribes protect their children....
They will help him before they help you.... I'm in a legal custody battle.... if I can prove that I am Cherokee... I know that the tribe will help me get my child back.
Good luck...
Remember document everything,
T.