Illinois Request for Name Change-ADDitional Children is a legal document that allows parents to officially change the name of their child in the state of Illinois. This form is necessary for parents who wish to change the name of more than one child at the same time. The document must be signed and notarized by both parents and submitted to the court for approval. There are two types of Illinois Request for Name Change-ADDitional Children forms: one for minor children and one for adult children. The form for minor children requires the parents to provide information about the child, such as their full name, birthdate, and place of birth. The form for adult children requires the same information, as well as the adult child's consent to the name change.