Affidavits are normally used in court proceedings or government agencies. Need a certified copy of a birth, death or marriage certificate issued in Wake County?Yes, the affidavit is basically a statement saying they have knowledge of the marriage and how they obtained the knowledge (eg I witnessed the marriage). An affidavit is a sworn statement of fact that can be used in a variety of legal proceedings, from bankruptcy cases to family and civil litigation matters. The purpose of the EDIA is to provide a complete and accurate inventory (i.e. A marriage affidavit is a legal document serving as a formal declaration under oath to verify a couple's marital status. This document can be used as an aid when preparing correspondence or documents (e.g. 1999) (defining hostes humani generis as the. Also, memorial of the Legislature of the. Massachusetts's legalization of same-sex marriages, Catholic Charities in Boston shut down its. 11.