An affidavit of heirship is a legal document frequently utilized in the NYC probate process to ascertain the heirs of a deceased individual. Note: This form must be downloaded to your device in order to be filled out properly.It must be opened in Adobe Acrobat Reader. Title Insurance real estate forms archive containing over 300 forms in MS Word and Adobe acrobat format. A New York small estate affidavit is a legal document that facilitates the transfer of assets of a person who died. What is required for an affidavit of heirship? This is archived content from the U.S. Department of Justice website. The information here may be outdated and links may no longer function.