An Illinois Affidavit-Copy Of Will is a document used to prove the authenticity of a testator’s (deceased person’s) last will and testament. It is a sworn statement signed by two witnesses to the will, attesting that the will is an accurate copy of the original. The witnesses must state that they saw the testator sign the will in their presence and that the testator was of sound mind and memory when they did so. The Illinois Affidavit-Copy Of Will must be filed with the probate court in the county where the testator resided. There are two types of Illinois Affidavit-Copy Of Will: the Self-Proving Affidavit, which is signed by the testator and two witnesses in the presence of a notary public; and the Attested Copy Affidavit, which is signed by two witnesses only.