Te general affidavit form. Use this form to swear under oath in writing to facts that you personally know.An affidavit is a written statement you're asserting is true. An affidavit is the written equivalent of verballygiven court testimony. A Small Estate Affidavit is a legal document that speeds up the asset distribution process when an individual dies with a small estate. O The sheriff will fill out the rest of the form. The sheriff will complete an affidavit for each. NOTE: If there are any words or terms used in these instructions that you do not understand, please visit Illinois. Legal Aid Online at illinoislegalaid. This form is used in family and divorce cases where someone is requesting child support, temporary maintenance, or attorney's fees.