Rhode Island General Laws Title 33. Probate Practice and Procedure § 33-22-2. Contents of petition for probate or administration

(i) The names and post office addresses of the surviving spouse and heirs at law. Provided, however, if no heirs at law are listed, the petitioner shall file an affidavit under oath setting forth what efforts the petitioner has made to locate heirs at law.

(ii) If the person is under the age of eighteen (18) years, his or her age, post office address, and the names and post office addresses of his or her parents, or such of them as may be living, and of his or her guardian or guardians if any.

(iii) If the person is an adjudged incompetent, the name and post office address of his or her guardian or guardians if any, and the name and post office address of the person or institution having the care or custody of the incompetent.

(iv) If the petition is for the allowance of a will, it shall also contain the names and post office addresses of the named beneficiaries entitled to take there under to the extent that they are different than the heirs at law.