After the Affidavit of Service is done, it must be filed with the Court. After it is written, an affidavit in opposition must be notarized.Any exhibits (documents that support your position) must be attached to the affidavit. In the affidavit, you would state your true name and the name that is on the document that you are trying to prove is a mismatch. You can file an application to change your legal name in any district court in Washington. The person requesting a name change is called the "petitioner." The child's surname can be changed with this same form. Intheblanks form required for any matter originating and electronically filed in Supreme or Surrogate's Courts in Richmond County. I've been lurking in this group for the past year as I work on gathering all the documents for my Jure Sanguinis application. Martin Luther King, Jr. Boulevard, Room 330, White Plains, NY 10601.