(735 ILCS 5/13-105) (from Ch. 110, par. 13-105)
    Sec. 13-105. Twenty years - Computation. If such right or title first accrued to an ancestor or predecessor of the person who brings the action or makes the entry, or to any person from, by, or under whom he or she claims, the 20 years shall be computed from the time when the right or title so first accrued.
(Source: P.A. 82-280.)