Important: The person alleging forgery must complete this form in longhand. This article will shed light on the specifics of a California affidavit template, a vital tool that can simplify your legal journey.Affidavit of Check Forgery - Complete, print, sign and mail this form to Star One Credit Union per instructions below. This Affidavit is made voluntarily for the purpose of establishing the fact that my signature is a forgery. 7. Do you know who forged your signature? I swear or affirm under penalty of perjury the above stated facts are true and correct to the best of my knowledge. An affidavit of forgery is an official declaration that a fraudulent act was committed. It should be completed, notarized, and sent to notify institutions. Draft Affidavit of Forgery. " (Government Code section 8206).