Fill Out the "Affidavit of Service" form in this packet. • NOTARIZE: Take the completed, "Affidavit of Service" form to a.If you change your name as part of the Dissolution of Marriage (divorce), you need to get a certified copy of the Decree from the Clerk of the Court. You can go to the county courthouse and file a name change petition. You will need to fill out some paperwork and pay a filing fee. Here is the form you file in Superior Court with clerk in your county. You pay filing fee and court will set it for hearing. Forms for requesting a name change in Arizona for an adult or minor child. Forms are available in English and Spanish. Please specify the field name you want to amend in the data field column on the affidavit. 5.