We live in Colorado and the child is 21 years old and lives in Iowa. We finally saw a picture of this child and my husband doesn't believe this child is his. He still believes that since this child is not his he is refusing to pay the back child support that he owes. She was a swinger at the time of conception of the mother and doesn't look like any part of his family. Are there any laws in the books pertaining to parernity after the child reaches the age of 18 years old. This we feel needs to be done for the proper medical information of this child. We also want this back child support taken care of, but because he (my husband) won't pay this until he knows. She was still married to whom we believe the father is at the time of conception to another man who still lives in the state of Iowa and when the child was born her name on the the birth certificate states her name as: Allysa Desiree Bordwell-Jonas. Bordwell was her first husbands name. Can you help?