What does it mean to legitimize a child in Georgia? The first step to legitimize a child is for the biological father to file a petition for legitimation and establish paternity. The father may also seek custody or visitation at the same time. Another common issue in a legitimation is child support. If child support is an issue, both parents must provide evidence related to their income. If there are any contested issues, a mediation and or hearing will be set. Give TSLF a call today to discuss!