Ill. R. Cir. Ct. Will Cnty. 10.03
Actions to contest admission or denial of a Will to probate, to contest the validity of a Will or intervivos trust to which a legacy is provided by a Will, to construe a Will or testamentary trust, to appoint a testamentary trustee during the period of administration or to seek any other appropriate relief relative to an estate pending in the Probate Division shall be designated a supplemental proceeding and shall employ the same file number as the estate to which it relates. The parties shall be designated as in other civil actions. The fee required by law shall be paid at the time the action is filed. Except in the case of an actual jury trial, or unless otherwise ordered by the Chief Judge, the action shall be heard by the judge in the Probate Division to whom the estate has been assigned.
Ill. R. Cir. Ct. Will Cnty. 10.03