How Do I Fill Out an Affidavit of Domicile? An original death certificate.An estimate of the estate's value. Did the decedent spend time in Pennsylvania during the five years preceding death ? Name of Deceased had permanent legal residence at. When a person dies and leaves a will with assets in their name only, the will must go through a probate process. This process proves that the will is valid. Domicile refers to the locality where a taxpayer maintains his or her permanent abode, and is the place where he or she intends to return whenever absent. An affidavit of domicile is a legal document that certifies the residence of a deceased person.