Question regarding biological father's rights

Wow sounds like a mess. As loveajax stated, The first thing your husband needs to do is contact social services in the county that the little boy is in and tell them that he is the bio father and he wants to know how to go about getting custody of him. I know that isn't very helpful but you have to start somewhere and that is your best bet. Also schedule a free consultation with a lawyer regarding this issue and get some advice and find out his rights.