A legal document ordered by a The legal proceeding by which a decedent’s testamentary document, such as a will, is proven to be valid, and the subsequent procedure of administering the decedent’s estate. court which recognizes a person as the A person who is identified in a decedent’s will as the person the decedent wants to become responsible for administering the decedent’s estate according to the terms and instructions of the will. under a decedent’s A legal document which expresses a person’s final wishes about what happens to their property after they pass away, often specifically identifying intended beneficiaries for specific items of property. and which grants that person the authority to administer the The assets and liabilities left behind by a decedent.. Many entities, such as banks, will require an executor to present them with letters testamentary before disclosing any information about a decedent’s assets.