755 ILCS 5/9-4

Petition to issue letters.) Anyone desiring to have letters of administration issued on the estate of an intestate decedent shall file a petition therefor in the court of the proper county. The petition shall state, if known: (a) the name and place of residence of the decedent at the time of his death; (b) the date and place of death; (c) the approximate value of the decedent's real and personal estate in this State; (d) the names and post office addresses of all heirs of the decedent and whether any of them is a minor or person with a disability and whether any of them is entitled either to administer or to nominate a person to administer equally with or in preference to the petitioner; (e) the name and post office address of the person nominated as administrator; (f) the facts showing the right of the petitioner to act as or to nominate the administrator; (g) when letters of administration de bonis non are sought, the reason for the issuance of the letters; and (h) unless supervised administration is requested, the name and address of any personal fiduciary acting or designated to act pursuant to Section 28-3.