As an adult wishing to change your name, you must have two (2) Affidavits of. Character from RESIDENTS OF MECKLENBURG COUNTY who ARE NOT.There should be complete fill in the blank documents with instructions at the self serve center at the courthouse. Affidavit Of Good Character (Adult Name Change) PDF, 168 KB. These files may not be suitable for users of assistive technology. To prove your legal name change, you must show one of the following documents: Marriage document. 1. Enter your current full legal name in the first section. After your notice has been posted for ten days, you will file your Petition and your two (2) Affidavits of Good Character in the Civil Clerk's office. What documents do you need? You go to the courthouse and fill out a form, showing your current name and the name you want, plus your reason for changing it. To change the name on a vehicle registration and title, complete a Corrected or Substitute Title Application (MVR5).