This form must be sworn to under oath and signed before a Clerk of the Court or comparable official where the applicants reside. The person who serves the papers on the Defendant must fill out the "Affidavit of Service" and return it to the Plaintiff signed and notarized.You will have to print out the form and bring it with you. View requirements for applying for a marriage license, search available marriage license cases, and learn how to obtain a marriage record. You must complete the. The Declaration form is available from the county clerk There is a form Affidavit of Informal Marriage that needs to be filled out and. Affidavit of Service (Private Process). Use this form to provide proof to the court that copies of documents filed in a case have been served on a party. An Affidavit of Eligibility to Marry. Maryland and voting, driving and income tax records bear this out.