Verified answer

ancestry.com

But I won't try online. I would hire a private detective it cost them 75 dollars I belive.

This happened with my sister. Only, my grandmother took the time to find him and he accepted my sister and now they have a good relationship. He even accepts her kids.

Does he know you exist? You shouldn't spring all this upon a man, he might have another family. If your mother is around, I think it would be best if she broke the news.