By my signature below, I swear and affirm that I am the owner of the property. It is very important that you complete this form, have it notarized, and return it to our office, even if no direct payments were received.An affidavit of heirship is a document used to give property to the heirs of a person who has died. It may be needed if the person did not have a will. The applicant must use this affidavit to support their claim of residency or being domiciled in Texas.