Each of the following persons must be made a party to a proceeding to declare heirship:
(1) each unknown heir of the decedent who is the subject of the proceeding;
(2) each person who is named as an heir of the decedent in the application filed under Section 202.005; and
(3) each person who is, on the filing date of the application, shown as owning a share or interest in any real property described in the application by the deed records of the county in which the property is located.