Okla. Stat. tit. 66, § 59

Whenever any railroad corporation shall take any real property as aforesaid, of any minor, any person who is incapacitated or partially incapacitated as such terms are defined by Section 1-111 of Title 30 of the Oklahoma Statutes, the guardian of the minor, or incompetent person, may agree and settle with the corporation for all damages or claims by reason of the taking of such real property, and may give valid releases and discharges therefor upon the approval thereof by the judge of the county court.