Double-check all the information you have written in the certificate, such as the spelling of the signer's name and the date, and make sure it's correct. Use precise language and format the affidavit according to any specific legal requirements.A name change affidavit typically includes your current legal name, the new name you wish to adopt, and the reasons for your name change. Does an Affidavit of Name Change Form need to be notarized or witnessed? A Notarized Affidavit is a written statement that is required if you are unable to provide the original document confirming facts of your application. The document also requires a statement of truth, the affiant's signature, and notarization. To update your personal name, business or residence address download, complete and submit the Change Notice to the address on the form. Give the form to your local notary office and have them legally complete your affidavit of change name. I am a California notary. I just became a NSA.