765 ILCS 10/5
In all cases where any minor heirs shall be interested in such proceedings as aforesaid, reasonable notice of such application shall be given to the guardian of such minors; and if there shall be no guardian, then the said court shall appoint a guardian to litigate and act in such case.
(from Ch. 29, par. 5)
(Source: Laws 1871-2, p. 277.)