During divorce negotiations and the time following the final decree, issues with child custody and support can continue to be a contentious argument between parents. Fathers who are not married to the mothers of their children may also find themselves in contentious arguments with their child's other parent and in need of legal advice from a Florida family law attorney. If paperwork does not list a child's father at birth, fathers must file legal paperwork to claim legal paternity. Paternity is important for a father to receive visitation and/or custody rights regarding a child.