In addition to the requirements for an application under Section 257.051, if an applicant for the probate of a will as a muniment of title cannot produce the will in court, the application must state:
(1) the reason the will cannot be produced;
(2) the contents of the will, to the extent known; and
(3) the name and address, if known, whether the person is an adult or minor, and the relationship to the testator, if any, of:
(A) each devisee;
(B) each person who would inherit as an heir of the testator in the absence of a valid will; and
(C) in the case of partial intestacy, each heir of the testator.
Official text of the Texas Estates Code as published by the Texas Legislative Council.