The adult name change form is used to ask (or "petition") the NY State Supreme Court to change your name. The court has placed the most commonly used forms on line as a resource.Please be advised that the forms detailed below are intended to be a guide. An Affidavit of Name Change is a sworn statement that is used to verify the identity of a person who operates under multiple names. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County. Affidavits must also: • include all relevant facts. • be written in the first person using an active voice. A name change affidavit typically includes your current legal name, the new name you wish to adopt, and the reasons for your name change.