I live in Ohio with my boyfriend. He has a child from a previous marriage. I'm not sure if his name is on her birth certificate at all; but her last name is not his. We won't get into the type of person his ex is, but she had connections at the hospital and the second he left they put her last name on the child's birth certificate instead of his. They have never had a test done, but if her last name is different does he still have to pay child support? Or does that all count on whether his name is on the certificate at all?

