Any person interested as or through an executor, administrator, trustee, guardian, or other fiduciary, creditor, devisee, legatee, heir, next of kin, or cestui que trust in the administration of a trust, or of the estate of a decedent, a person under eighteen (18) years of age, or a mentally incompetent person may have a declaration of rights or legal relations:
IC 34-14-1-4
Pre-1998 Recodification Citation: 34-4-10-4.