Question: how to change your child's last name in delaware?
Answer: Step 1 – Petition for Name Change. ... 
Step 2 – Affidavit. ... 
Step 3 – Notarize Documents. ... 
Step 4 – Notice of Name Change for Publication. ... 
Step 5 – Form Letter for Parent of Minor Child (New Castle and Sussex) ... 
Step 6 – Questionnaire (New Castle and Sussex) ... 
Step 7 – Serve Other Parent (Kent County)